Crossword Genius

Stop up (4)


There are a few possibilities for this:

'stop up' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for seal that I've seen before include "Marine animal or sign of authenticity" , "Signet" , "Close - (performing?) animal" , "Amphibious fish-eating sea mammal" , "stop leaks" .)

I've seen this clue in the Penny Press and the Evening Standard.
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