n.
     - an act of hitting:![]()  he received three strokes of the cane. ▸Golf  an act of hitting the ball with a club, as a unit of scoring. ▸a sound made by a striking clock. 
- a mark made by drawing a pen, pencil, or paintbrush once across paper or canvas. ▸a line forming part of a written or printed character. ▸a short diagonal line separating characters or figures. 
- an act of stroking.
- one of a series of repeated movements. ▸the whole motion of a piston in either direction. ▸a style of moving the arms and legs in swimming. ▸the mode or action of moving the oar in rowing. ▸
(also stroke oar)
 the oarsman nearest the stern, setting the timing for the other rowers. 
- a sudden disabling attack or loss of consciousness caused by an interruption in the flow of blood to the brain.
v.
   - move one's hand with gentle pressure over (a surface).
- N. Amer. informal manipulate by means of flattery or persuasion.
- act as the stroke of (a boat or crew).
Phrase
  
    - at a 
(or one)
 stroke
 by a single action having immediate effect.
- not 
(or never)
 do a stroke of work
 do no work at all.
- on the stroke of ——
 precisely at the specified time.
- put someone off their stroke
 disconcert someone so that they make a mistake or hesitate.
- stroke of genius
 an outstandingly original idea.
- stroke of luck 
(or good luck)
 a fortunate unexpected occurrence.
 
  Derivative
  
    - strokeable adj.
- stroker n.
 
  Etymology
  OE strācian ‘caress lightly’, of Gmc origin; rel. to strike.