- to listen attentively; hearken.
- to listen to; hear.
- a hunter's shout to hounds, as to encourage them in following the scent.
- hark back,
- (of hounds) to return along the course in order to regain a lost scent.
- to return to a previous subject or point; revert: He kept harking back to his early days in vaudeville.
- to listen; pay attention