Agent noun of bite; someone or something who bites or tends to bite.

(fishing) A fish that tends to take bait.

(curling) A stone that barely touches the outside of the house.

(slang) One who copies someone else's work, style or techniques, especially in hip-hop.

(fiction) A zombie.

(in combination, computing) Something (a data unit, machine etc.) with a width of a specified amount of bits.