Crossword Genius

One after the other forming a line (2,1,3)

Ross

I believe the answer is:

in a row

I believe this is a double definition.

'one after the other' is the first definition.
(I've seen this in another clue)

'forming a line' is the second definition.
(I've seen this before)

(Other definitions for in a row that I've seen before include "Consecutively" , "Like all the pretty maids" , "successively" , "becoming involved in disturbance" , "Paul --, Swiss artist" .)

I've seen this clue in The Telegraph.
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