skin

1 skin /ˈskɪn/ noun
plural skins
1 skin
/ˈskɪn/
noun
plural skins
Britannica Dictionary definition of SKIN
1 
: the natural outer layer of tissue that covers the body of a person or animal
[noncount]
[count]
2 
: the skin of an animal that has been removed from the body often with its hair or feathers still attached and that is used to make things (such as clothes)
[count]
[noncount]
3 
: the outer covering of a fruit, vegetable, etc.
[count]
[noncount]

(a) thick/thin skin

◊ If you have (a) thin skin, you are easily upset or offended by the things other people say or do.
◊ If you have (a) thick skin, you are not easily upset or offended by the things other people say and do.

by the skin of your teeth

informal
: only by a small difference in time, space, or amount : just barely

get under your skin

informal
1 
: to irritate or upset you
2 
: to affect you emotionally even though you do not want or expect to be affected

jump out of your skin

informal
◊ If you almost/nearly (etc.) jump out of your skin, you are suddenly surprised or frightened very much by something.

no skin off my nose

informal
— used to say that you do not care or do not have a strong opinion about something

save someone's skin

— see 1save

skin and bones

informal or skin and bone
: very thin in a way that is unattractive and unhealthy

— skinless

/ˈskɪnləs/ adjective
2 skin /ˈskɪn/ verb
skins; skinned; skinning
2 skin
/ˈskɪn/
verb
skins; skinned; skinning
Britannica Dictionary definition of SKIN
[+ object]
1 
: to remove the skin of (an animal, fruit, or vegetable)
2 
: to scrape or rub off some of the skin from (a body part)

keep your eyes skinned

— see 1eye

skin (someone) alive

informal
: to punish (someone) severely