tiller in WordNet English dictionary

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

1. grow shoots in the form of stools or tillers
   stool  tiller