Crossword Genius

Guard dispatched to railway? (6)

Ross

I believe the answer is:

sentry

'guard' is the definition.
(I know that sentry is a type of guard)

'dispatched to railway?' is the wordplay.
'dispatched' becomes 'sent' (I've seen this in another clue).
'to railway?' becomes 'ry' (abbreviation for railway).
'sent'+'ry'='SENTRY'

(Other definitions for sentry that I've seen before include "One who stands guard" , "Guard on watch" , "Mil. guard" , "Picket" , "One posted on guard" .)

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