tiller

noun

1.
a shoot that sprouts from the base of a grass
Derived from:
tiller
2.
someone who tills land (prepares the soil for the planting of crops)
tillman
Derived from:
till
3.
lever used to turn the rudder on a boat
4.
a farm implement used to break up the surface of the soil (for aeration and weed control and conservation of moisture)
sull cultivator
Derived from:
till