A temporary prop on land (6)

I believe the answer is:

ashore

'on land' is the definition.
(synonyms)

'a temporary prop' is the wordplay.
'temporary prop' becomes 'shore' (shore can mean a temporary prop or beam).
'a'+'shore'='ASHORE'

(Other definitions for ashore that I've seen before include "Beached" , "Going on land from sea" , "Returned to land" , "on terra firma" , "Home for the sailor" .)

I've seen this clue in The Times.

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