Crossword Genius

Joined at the elbows (3-2-3)

Ross

I believe the answer is:

arm-in-arm

(Other definitions for arm-in-arm that I've seen before include "With upper limbs linked in companionship" , "With limbs interlinked" , "Linked at the elbows" , "Closely linked" , "Closely interlinked" .)

I've seen this clue in the LA Times.
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