aid noun \ˈād\
: the act of helping or treating; also : the help or treatment given <in need of immediate medical aid>
: an assisting person or group <a laboratory aid>—compare aide
: something by which assistance is given : an assisting device <a visual aid>; especially : hearing aid
Seen & Heard
What made you want to look up aid? Please tell us where you read or heard it (including the quote, if possible).