I. noun
also ac·cor·de·on or ac·cor·di·an əˈkȯ(r)dēən also aˈ-
( -s )
Etymology: German akkordion, from akkord chord (from French accord ) + -ion (as in melodion )
: a portable keyboard wind instrument in which the wind is forced past free metallic reeds by means of a hand-operated bellows
[s]accordio.jpg[/s]
II. adjective
: folding like an accordion : creased or hinged so as to fold like an accordion
an accordion pleat
an accordion map
an accordion door