Piper
来自Big Physics
wiktionary
From Middle English piper, pipere; equivalent to pipe + -er.
piper
etymonline
piper (n.)
"one who plays the pipes," Old English pipere, agent noun from pipe (v.). By late 14c. also "a bag-piper." As a kind of fish, from c. 1600. Figurative expression pay the piper is recorded from 1680s.
