any of a family of musical wind instruments in which sounds are produced in reed pipes supplied with air from a bag inflated either by the player's mouth, as in the Irish bagpipes or Highland bagpipes of Scotland, or by arm-operated bellows, as in the Northumbrian bagpipes
(modifier) of or relating to the bagpipes: a bagpipe maker
late 14c., from bag (n.) + pipe (n.1); originally a favorite instrument in England as well as the Celtic lands, but by 1912 English army officers' slang for it was agony bags. Related: Bagpiper (early 14c.).