Crossword Genius

Seasons for adders (7)

Ross

I believe the answer is:

summers

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

This clue could be a double definition.

'seasons' is the first definition.
(I know this)

'adders' is the second definition.
Although both the answer and definition are plural nouns, I don't understand how one could define the other.

'for' is the link.

Can you help me to learn more?

(Other definitions for summers that I've seen before include "warmer weather!" , "They add up" , "Seasons" .)

I've seen this clue in the Sydney Morning Herald.
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