• ¿Bailamos?—Informal for “Shall we dance?” See Milonga, Confitería Bailable, Bailongo, Bailer, Ronda, Práctica, Orquesta, Bandoneón, Parejas, Abrazo, Pinta, Bien Parado, Postura, Códigos, Cortina, Tanda, and Cabeceó.

• Bailar - To dance. See Milonga, Confitería Bailable, Bailongo, Ronda, Práctica, Orquesta, Bandoneón, Parejas, Abrazo, Pinta, Bien Parado, Postura, Códigos, Cortina, Bailamos, Tanda, and Cabeceó.

• Bailarín - A professional or very accomplished dancer. See Tanguero, Lunfardo, Milonguera, Milonguita, Aficionado, Compadre, Vareador, Compadrito, Grelas, Guapo, Portranca, Mina, Paicas, Pebeta, and Planchadoras.

• Bailongo - A lunfardo word to describe a place where people dance, i.e. a milonga. See Milonga, Confitería Bailable, Bailar, Ronda, Práctica, Orquesta, Piso, Pista, Bandoneón, Parejas, Abrazo, Pinta, Postura, Bien Parado, Códigos, Cortina, Bailamos, Tanda and Cabeceó.

• Bajada (Descent) - Form of a Cuartas (Poses) in Silver Tango.

• Balanceo (Swinging) - Key Pattern 3 in Bronze Vals and a variation of Construccion Básica with Básico in Bronze Vals. A deep check and replace.

• Baldosa (Tile) - Key Pattern 2 in Bronze Tango and Bronze Milonga and Bronze Vals. A walking box figure named after the black & white checkerboard tile floors which are common in Buenos Aires. See Cuadrado.

• Bamboleo (Wade) - A variation of Baldosa in Bronze Milonga.

• Bandoneón - An accordion like musical instrument originally created to provide missionaries with portable pipe organ music for religious services in remote locales which has been adopted by tango musicians to create the mournful and soulful sound of modern tango music. The Bandoneón was invented in Germany by Heinrich Band and imported into Argentina in 1866. See Milonga, Confitería Bailable, Bailongo, Bailar, Ronda, Práctica, Orquesta, Piso, Pista, Parejas, Abrazo, Pinta, Postura, Bien Parado, Códigos, Cortina, Bailamos, Tanda and Cabeceó.
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• Barricada (Barricade) - A variation of Pasadas in Gold Tango.

• Barrida (Sweeps; a sweeping motion) - A variation of Contra Barrida in Silver Tango. One partner’s foot sweeps the other’s foot and places it without losing contact. Barridas are done from either the outside or the inside of the foot of the receiving party. The technique is different for the inside and outside barridas. See Arrastre and Llevada.

• Barrio - A district or neighborhood.

• Basculada (Tilted) - A variation of Palancas in Gold Vals.

• Base Cruzada (Cross Basic) - A variation of Básico Academico in Silver Pecho.

• Básica Cruzado (Crossed Basic) - Key Pattern 1 in Silver Tango and Key Pattern 2 in Silver Milonga and Key Pattern 1 in Silver Vals. Tango basic step in the cross system.

• Básico (Basic Start) - A variation of Construcción Básica in Bronze Tango and Bronze Milonga and Bronze Vals. The basic pattern. There are several basic patterns, the most common of which is the 8-count basic.

• Básico Académico (Academic Basic) - Key Pattern 1 in Bronze Pecho.

• Batidos (Whisks)  - A variation of Key Pattern10 in Gold Tango.

• Batuque (Drumbeats) - A variation of Encadenada in Gold Milonga.

• Beat - Music and Dance Term. The basic unit of time or the pulse (regulary repeating event) of the music. The beat is often defined as the rhythm listeners would tap their foot to when listening to a piece of music. The beats and parts of beats are often divided and pronounced as such: "1" "uh" "and" "ah" "2", where "1" and "2" are the first two beats, the "and" is halfway between "1" and "2", the "uh" is halfway between "1" and "and", and the "ah" is halfway between "and" and "2". Written as 1 e & a 2. See Beat, Compás, Improvisational, Lead, Legato, Musicality, Ostinato, Phrase, Ritmo, Rubato, Staccato and Syncopation.

• Bicicleta (Bicycle) - A variation of Contra Intrusión in Gold Vals. A circular movement of the feet led by the man in the vertical plane with the couples are coupling their ankles.

• Bien Parado - Well stood (literally), standing straight up. Elegantly and gallantly presented. See Milonga, Confitería Bailable, Bailongo, Bailar, Ronda, Práctica, Orquesta, Piso, Pista, Bandoneón, Parejas, Abrazo, Pinta, Postura, Códigos, Cortina, Bailamos, Tanda and Cabeceó.

• Bocadillo (Butty, Sandwich) - A variation of Mordida in Silver Pecho.

• Boleo Básico (Basic Throw) - Key Pattern 6 in Bronze Vals.The Boleos are small kicks with the leg. If the flick is to the back of the dancer it is called a Boleo, while if the flick are to the front of the dancer it is called a Voleo. This routine is a man’s left side step and then the man leads a Boleo for the woman with her left leg kicking back to her right, and then a man’s right side step and then the man leads a Boleo for the woman with her right leg kicking back to her left. The lead comes from the hips and chest, Not The Arms! This is a spring action - the leg swings back and, after hitting its stop, it springs back to the side. Additional techniques include the rise and fall of the man. Start low and rise as the woman executes the Boleo or Voleo.

• Boleo Cuatro/Castigada (Shape Four/Punished) - A variation of Boleo Básico in Bronze Vals.

• Boleo y Voleo (Throw & Volley) - Key Pattern 4 in Silver Tango. A Boleo may be executed either high or low. Keeping the knees together, with one leg back, swivel and return on the supporting leg with a whipping action of the working leg. Kneecap behind knee. Sometimes spelled Voleo. See Latigazo.

• Boleadoras (Bolas) - A variation of Boleo y Voleo in Silver Tango.

• Brazos (Arms) - See Cintura, Cuerpo, Dedo, Espalda, Pecho, Pie, Pierna, and Rodillas.