Acorn, for one (3)
(Other definitions for nut that I've seen before include "needing to get tight?" , "Hard edible seed" , "Cashew, for example" , "Almond, for example" , "Enthusiastic person" .)
(Other definitions for seed that I've seen before include "High-ranked player in a knock-out tournament" , "Pip - source - children" , "Kernel" , "It can develop into a plant" , "An outstanding player in a tournament" .)