Fruit and ice-cream will be about a pound for two (6)
I believe the answer is:
couple
'two' is the definition.
(couple is a kind of two)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for couple that I've seen before include "Two of a kind" , "Brace, pair" , "Duo, brace" , "Pair - put together" , "Bonnie and Clyde, say" .)