Word Origin & History
diveemerged 13c. from O.E. dufan "to dive, duck, sink" (intransitive, class II strong verb; past tense deaf, pp. dofen) and dyfan "to dip, submerge" (weak, transitive), from P.Gmc. *dubijanan. Past tense dove is a later formation, perhaps on analogy of drive/drove. Sense of "disreputable bar" is first recorded
Amer.Eng. 1871, perhaps because they were usually in basements, and going into one was both a literal and figurative "diving." Related: Diver; diving.