Crossword Genius

French fish giving up a small something found in fugu? (6)

Ross

I believe the answer is:

poison

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

'french fish' is the definition.
The definition and answer can be both to do with contact as well as being verbs in their base form.
Maybe they are linked in a way I don't understand?

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for poison that I've seen before include "I spoon up the lethal substance" , "Deadly substance" , "It causes illness or death in a living organism" , "[ADDER] 's defence" , "Eg, toxin" .)

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