Tiller

n. one who prepares land for raising crops, farmer; lever used to steer a boat by changing the direction of a rudder (Nautical); original shoot of a plant (Botany); stalk of a crossbow

A tiller or till is a lever attached to a rudder post (American terminology) or rudder stock (English terminology) of a boat in order to provide the leverage for the helmsman to turn the rudder. The tiller is normally used by the helmsman directly pulling or pushing it, but it may also be moved remotely using tiller lines.
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Noun
1. a shoot that sprouts from the base of a grass
(hypernym) shoot
(derivation) stool
2. someone who tills land (prepares the soil for the planting of crops)
(hypernym) farmer, husbandman, granger, sodbuster
(derivation) till
3. lever used to turn the rudder on a boat
(hypernym) lever
(part-holonym) rudder
4. a farm implement used to break up the surface of the soil (for aeration and weed control and conservation of moisture)
(synonym) cultivator
(hypernym) farm machine
(hyponym) harrow
(derivation) till
Verb
1. grow shoots in the form of stools or tillers
(synonym) stool
(hypernym) grow, develop, produce, get, acquire

(v. t.)
One who tills; a husbandman; a cultivator; a plowman.
  

(v. i.)
To put forth new shoots from the root, or round the bottom of the original stalk; as, wheat or rye tillers; some spread plants by tillering.
  

(n.)
The stalk, or handle, of a crossbow; also, sometimes, the bow itself.
  

(n.)
The handle of anything.
  

(n.)
A young timber tree.
  

(n.)
A sprout or young tree that springs from a root or stump.
  

(n.)
A small drawer; a till.
  

(n.)
A shoot of a plant, springing from the root or bottom of the original stalk; a sucker.
  

(n.)
A lever of wood or metal fitted to the rudder head and used for turning side to side in steering. In small boats hand power is used; in large vessels, the tiller is moved by means of mechanical appliances. See Illust. of Rudder. Cf. 2d Helm, 1.
  

Synonyms and related words:
Bauer, agriculturalist, agriculturist, agrologist, agronomist, coffee-planter, collective farm worker, crofter, cropper, cultivator, dirt farmer, dry farmer, farm laborer, farmer, farmhand, gentleman farmer, granger, grower, harvester, harvestman, haymaker, helm, husbandman, kibbutznik, kolkhoznik, kulak, muzhik, peasant, peasant holder, picker, planter, plowboy, plowman, raiser, rancher, ranchman, reaper, reins, reins of government, rudder, rustic, sharecropper, sower, tea-planter, tenant farmer, tree farmer, truck farmer, wheel, yeoman|