#1 buggy n. [roadster] a small lightweight carriage; drawn by a single horse. wn
#2 buggy s. [balmy, barmy, bats, batty, bonkers, cracked, crackers, daft, dotty, fruity, haywire, kooky, kookie, loco, loony, loopy, nuts, nutty, round the bend, around the bend, wacky, whacky] informal or slang terms for mentally irregular; "it used to drive my husband balmy". wn
#3 buggy s. infested with bugs. wn
vizzz