(Canada, US) An instance of looking backwards over one's shoulder while driving or biking, before changing lanes or making a turn, to see if any vehicles are in one's blind spots.

(dated) a condom.

Used other than figuratively or idiomatically: see body, check. / (sports) A move in ice hockey or lacrosse in which a player impedes another with his body

(sports) To perform a body check on someone.

(US) A signed check of the type used to draw money from a bank account containing no information as to the amount to be paid with it.

plural of blank check

A check/cheque written against a bank account with insufficient funds to pay the bearer the amount of the check.

plural of bad check

The act of checking that something does not contain elementary mistakes or impossibilities, or is not based on invalid assumptions.

A current account; a bank account from which money can easily be transferred, by check(US)/cheque(UK) or other means.