Dance at which a sailor returns to the drink (5)
I believe the answer is:
rumba
'dance at' is the definition.
'rumba' can be an answer for 'dance' (rumba is a type of dance). I am not sure about the 'at' bit.
'a sailor returns to the drink' is the wordplay.
'a sailor' becomes 'ab' (abbreviation for able seaman).
'returns' is a reversal indicator.
'to' is a charade indicator (letters next to each other) (I've seen this in other clues).
'the drink' becomes 'rum' (rum is a kind of drink).
'ab' written backwards gives 'ba'.
'ba' after 'rum' is 'RUMBA'.
'which' acts as a link.
Can you help me to learn more?
(Other definitions for rumba that I've seen before include "Cuban folk dance" , "Afro-Cuban or ballroom dance" , "Dance originating in Cuba" , "Ballroom dance of Cuban origin" , "Umbra (anag)" .)