Ignore young woman that's found in sailor's arms (7)
I believe the answer is:
cutlass
'found in sailor's arms' is the definition.
'cutlass' can be an answer for 'arms' (cutlass is a kind of arms). I'm not sure about the 'found in sailor's' bit.
'ignore young woman' is the wordplay.
'ignore' becomes 'cut' (synonyms).
'young woman' becomes 'lass' (informal term for a young woman).
'cut'+'lass'='CUTLASS'
'that's' is the link.
Can you help me to learn more?
(Other definitions for cutlass that I've seen before include "Short broad sword" , "Curved, one-edged sword" , "Steel" , "Type of sword" , "Pirate's weapon" .)