IPA: /ˈstroʊkər/
KK: /ˈstroʊkər/
A person or thing that strokes, which means to move one's hand or an object gently over a surface.
The stroker carefully guided the brush across the canvas.
Stroker → The word originates from the verb 'stroke' (from Old English 'strican', meaning to touch or rub gently) combined with the agent suffix '-er' (meaning a person who performs an action). A 'stroker' is therefore a person who strokes or touches gently.
Think of someone who 'touches gently' — 'stroke' means to touch, and '-er' indicates a person doing that action.