Crossword Genius

Musical lubricant (6)

Ross

I believe the answer is:

grease

I believe this is a double definition.

'musical' is the first definition.
(Grease is a film musical)

'lubricant' is the second definition.
(I've seen this before)

(Other definitions for grease that I've seen before include "Lubricate - musical" , "Rock musical" , "Possible cause of slip-up" , "Lubricate (-ant)" , "Fatty lubricant" .)

I've seen this clue in The Daily Express and The Mirror.
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