The American Heritage® Dictionary of the English Language, 4th Edition
n. A musical instrument having a flexible bag inflated either by a tube with valves or by bellows, a double-reed melody pipe, and from one to four drone pipes. Often used in the plural.
the GNU version of the Collaborative International Dictionary of English
n. A musical wind instrument, now used chiefly in the Highlands of Scotland.
v. To make to look like a bagpipe.
The Century Dictionary and Cyclopedia
n. A musical wind-instrument consisting of a leathern bag, which receives the air from the mouth, or from bellows, and of pipes, into which the air is pressed from the bag by the performer's elbow.
n.
To cause to resemble a bagpipe.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a tubular wind instrument; the player blows air into a bag and squeezes it out through the drone
Word Usage
"The skirl of a bagpipe was the only sound as the service began."