1 [usually in combination] a person who is determined to acquire or amass something, especially in an unscrupulous manner:a money-grubbera vote-grubber
2 [usually in combination] an implement for digging up plants:a daisy-grubber
3 Cricket a ball that is bowled along the ground.
(also grubber kick) Rugby a forward kick of the ball along the ground.
grubber in other Oxford dictionaries
Definition of grubber in the US English dictionary