serpent
ser.pent \'s*r-p*nt\ n [ME, fr. MF, fr. L serpent-, serpens, fr. prp. of serpere to] often attrib creep; akin to Gk herpein to creep, Skt sarpati he creeps archaic 1a: a noxious creature that creeps, hisses, or stings 1b: SNAKE; esp : a large snake 2: DEVIL 3: a subtle treacherous malicious person 4: an obsolete bass wind instrument made of wood