Crossword Genius

Net split from below (4)

Ross

I believe the answer is:

trap

'net' is the definition.
(thesaurus)

'split from below' is the wordplay.
'split' becomes 'part' (synonyms).
'from below' shows that the letters should be reversed in order (in a down clue, letters go up).
'part' in reverse letter order is 'TRAP'.

(Other definitions for trap that I've seen before include "that may catch a speeding motorist" , "Snare - mouth" , "Means of transport (sometime sprung!)" , "get in net" , "mug" .)

I've seen this clue in The Telegraph.
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