Crossword Genius

Rush animal from below (4)

Ross

I believe the answer is:

reed

'rush' is the definition.
(plants found by water)

'animal from below' is the wordplay.
'animal' becomes 'deer' (deer is a type of animal).
'from below' is a reversal indicator (in a down clue, letters go up).
'deer' reversed gives 'REED'.

(Other definitions for reed that I've seen before include "Tall grass at water's edge" , "Tall grass plant that grows in water" , "Stalk" , "Riverside grass" , "Tall stiff marsh or water grass" .)

I've seen this clue in The Globe and Mail and The Guardian.
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