Crossword Genius

Plot to develop rocket, for example (9)

Ross

I believe the answer is:

allotment

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

'plot' is the definition.
(I've seen this before)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for allotment that I've seen before include "cultivated area" , "grant?" , "Rented piece of ground" , "Vegetable plot" , "Piece of land let out for cultivation" .)

I've seen this clue in The Times.
Want a hint initially instead of a full solution? Install my app