To move on the feet by alternately setting each foot (or pair or group of feet, in the case of animals with four or more feet) forward, with at least one foot on the ground at all times. Compare run.
(of a batsman) To walk off the field, as if given out, after the fielding side appeals and before the umpire has ruled; done as a matter of sportsmanship when the batsman believes he is out.
To be stirring; to be abroad; to go restlessly about; said of things or persons expected to remain quiet, such as a sleeping person, or the spirit of a dead person.
A cheque drawn on a bank that was not a member of the London Clearing and whose sort code was allocated on a one-off basis; they had to be "walked" (hand-delivered by messengers).