Crossword Genius

Stick knife into second fruit (5)

Ross

I believe the answer is:

spear

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

'stick knife' is the definition.
'spear' can be an answer for 'knife' (thesaurus). I am not certain of the 'stick' bit.

'second fruit' is the wordplay.
'second' becomes 's' (common abbreviation).
'fruit' becomes 'pear' (pear is a kind of fruit).
's'+'pear'='SPEAR'

'into' is the link.

Can you help me to learn more?

(Other definitions for spear that I've seen before include "Sharp weapon" , "Thrown weapon" , "Portion of asparagus" , "stick" , "Asparagus shoot" .)

I've seen this clue in The Telegraph.
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