Given leave, people miss circulating, a reaction to cold (5,7)
I believe the answer is:
goose pimples
'a reaction to cold' is the definition.
I can't tell whether this definition defines the answer.
'given leave people miss circulating' is the wordplay.
'given' says to put letters next to each other.
'leave' becomes 'go' (to go is to depart or leave).
'circulating' indicates an anagram.
'people'+'miss'='peoplemiss'
'peoplemiss' with letters rearranged gives 'osepimples'.
'go' put next to 'osepimples' is 'GOOSE-PIMPLES'.
Can you help me to learn more?
(Other definitions for goose pimples that I've seen before include "Prickling of skin from cold, fear, etc" , "Horripilation" , "uneven skin" , "Skin condition when feeling cold" , "Bumps on the skin when excited" .)