I want to squeeze brother, no other — keep it in the family? (7)
I believe the answer is:
inbreed
'keep it in the family?' is the definition.
(I've seen this in another clue)
'i want to squeeze brother no other' is the wordplay.
'want' becomes 'need' (synonyms).
'to squeeze' indicates putting letters inside (inserted letters are squeezed inside).
'no' is a deletion indicator.
'brother' with 'other' removed is 'br'.
'need' placed around 'br' is 'nbreed'.
'i'+'nbreed'='INBREED'
(Other definitions for inbreed that I've seen before include "keep it in the family?" , "reproduce with relatives" , "Mate with close relatives" , "Produce offspring fro m closely related stock" .)