(slang, slightly pejorative) An attractive woman; a babe. / A short bar used by thieves to wrench doors open; a jimmy.

A diminutive of the female given name Elizabeth.

plural of betty

A diminutive of the female given name Elizabeth

plural of Betti

A surname from Italian.

(topology, algebraic topology) Any of a sequence of numbers, denoted bₙ, which characterise a given topological space K by giving, for each dimension, the number of holes in K of said dimension; (formally) the rank of the nth homology group, Hₙ, of K.

plural of Betti number

(military, informal) A land mine which is propelled a meter or two into the air before exploding to increase the amount of damage inflicted on surrounding troops.

plural of bouncing Betty