Definition of tillers:
(n) :
(nautical) The handle of the rudder which the helmsman holds to steer the boat, a piece of wood or metal extending forward from the rudder over or through the transom. Generally attached at the top of the rudder.
(n) :
(nautical) A bar of iron or wood connected with the rudderhead and leadline, usually forward, in which the rudder is moved as desired by the tiller (FM 55-501).
(n) :
(aviation, by extension) A steering wheel, usually mounted on the lower portion of the captain's control column, which is used to steer the aircraft's nosewheel or tailwheel to provide steering during taxi.
(n) :
A machine that mechanically tills the soil.
(n) :
A person who tills; a farmer.
(n) :
A shoot of a plant which springs from the root or bottom of the original stalk; a sapling; a sucker.