Crossword Genius

Left organisation in which one pushes for a delivery? (6)

Ross

I believe the answer is:

labour

I'm a little stuck... Click here to teach me more about this clue!

This could be a double definition.

'left organisation in which one pushes' is the first definition.
'labour' can be an answer for 'left' (I've seen this before). I am not certain of the remainder of the definition.

'a delivery?' is the second definition.
(I know that childbirth can be written as labour)

'for' is the link.

Can you help me to learn more?

(Other definitions for labour that I've seen before include "Workforce" , "21 [PARTY] ?" , "unnecessarily elaborate" , "Hard work, party" , "women have expected for months to be in" .)

I've seen this clue in The Telegraph.
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