Crossword Genius

Second unlikely delay (5)

Ross

I believe the answer is:

stall

'delay' is the definition.
(stalling is a kind of delaying)

'second unlikely' is the wordplay.
'second' becomes 's' (common abbreviation).
'unlikely' becomes 'tall' (I've seen this in other clues).
's'+'tall'='STALL'

(Other definitions for stall that I've seen before include "Come to a halt" , "Be evasive" , "Part of the stable" , "(Of engine) stop running; booth" , "Booth; prevaricate" .)

I've seen this clue in The Telegraph.
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