Crossword Genius

Go away and live with American bird (4,2)

Ross

I believe the answer is:

beat it

'go away' is the definition.
(I've seen this before)

'live with american bird' is the wordplay.
'live' becomes 'be' (synonyms).
'with american' becomes 'a' (common abbreviation - e.g. in organisation names. I am not sure about the 'with' bit.).
'bird' becomes 'tit' (tit is a kind of bird).
'be'+'a'+'tit'='BEAT IT'

'and' acts as a link.

(Other definitions for beat it that I've seen before include "make off furtively" , "Scarper" , "leave" , "Scram, get lost" , "try out drum kit?" .)

I've seen this clue in The Guardian.
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