Crooked seaman Oscar hugs Kim (6)
I believe the answer is:
akimbo
'crooked' is the definition.
(similar in meaning)
'seaman oscar hugs kim' is the wordplay.
'seaman' becomes 'ab' (short for able seaman).
'oscar' becomes 'O' (phonetic alphabet: alpha, bravo, charlie etc.).
'hugs' means one lot of letters goes inside another.
'ab'+'o'='abo'
'abo' enclosing 'kim' is 'AKIMBO'.
(Other definitions for akimbo that I've seen before include "Bent outwards (as limbs)" , "(Arms) on hips" , "With hands on hip, elbows out" , "Hands-on-hips" , "Stance with hands on hips" .)