bomber
n.— «The limited sportsman division, with cars of up to 255 cubic inches, the mini-modified division, with cars up to 2,200 cubic centimetres, and the bomber division, with six-cylinder street-stock cars, will round out the card.» —“Follow the leader Tactics change in 6-hour event” by Jonathan Mann Globe and Mail (Toronto, Can.) Aug. 14, 1981. (source: Double-Tongued Dictionary)