adverb
1. : close to the heels : close behind
at a word from his owner the dog moved to heel
2. : into agreement, control, or subjection : into line
the Commons, realizing that he was master still, came to heel — J.H.Plumb
his disciplined mind, rejecting excuses, came heavily to heel — J.G.Cozzens
it is hard to bring the eye to heel — D.L.Morgan