She suffered/had a stroke that left her unable to speak.
I'm sure there's a high risk [of] a heart at[t]ack or a stroke if you go on the way you [are going] now. (First Certificate in English; B2; Swedish)
What stroke do you prefer?
Although both may know how to swim, the professional, who was trained in proper strokes and hydrodynamic[s], will definitely turn out the better swimmer. (International English Language Testing System; C1; Tagalog)
He had exactly the part that I needed so that was a stroke of luck.
After a one-hour interview she was asked whether she could start work the very next day. A real stroke of luck. (Certificate of Proficiency in English; C2; French)
a brush stroke
The power of the brush strokes and the intense energy in the image made me sigh with adoration. (Certificate of Proficiency in English; C2; Polish)
Stroke the dog if you like, it won't bite.
He stroked his son's hair.
She stroked her chin and shut her eyes before answering.
And do not forget to stroke your cat! (First Certificate in English; B2; Russian)