heel

1 heel /ˈhiːl/ noun
plural heels
1 heel
/ˈhiːl/
noun
plural heels
Britannica Dictionary definition of HEEL
1 
[count] : the back part of your foot that is below the ankle — see picture at foot
2 
a  [count] : the part of a shoe or sock that covers the heel of your foot
b  [count] : the part of the bottom of a shoe or boot that is under the heel of your foot — see picture at shoe; see also high heels, spike heels
c  heels [plural] informal : shoes with high heels
3 
[count] : the part of the inside of your hand that is closest to your wrist
4 
[count] : the end of a loaf of bread
5 
[count] old-fashioned : a bad or selfish man

at someone's heels

: following someone very closely

cool your heels

— see 2cool

dig in your heels

— see 1dig

drag your heels

— see 1drag

head over heels

— see 1head

kick up your heels

— see 1kick

on someone's or something's heels

1 
◊ If you are (close/hard/hot) on someone's or something's heels, you are chasing or following that person or thing very closely.
2 
◊ If something comes or follows close/hard/hot on something's heels or close/hard/hot on the heels of something, it happens very soon afterward.

spin/turn on your heel

: to turn away from someone in a very quick or sudden way

take to your heels

: to begin to run away

to heel

1 
: to a position that is close behind
2 
: into a controlled or obedient condition

under heel

◊ If you are under the heel of someone or under someone's heel or (US) under heel, you are completely controlled by another person, group, etc.
2 heel /ˈhiːl/ verb
heels; heeled; heeling
2 heel
/ˈhiːl/
verb
heels; heeled; heeling
Britannica Dictionary definition of HEEL
[no object]
1 
— used as a command to tell a dog to walk next to you
2 
of a boat or ship : to lean to one side