“A kind of gift for,” I interposed (5)
I believe the answer is:
genus
'a kind' is the definition.
(genus is a kind of kind)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for genus that I've seen before include "Kind or sort of" , "Latin class?" , "Taxonomic group (biol.)" , "Division of family" , "Category between family and species" .)