('figurative') He has the power to end this policy 'with a (single) stroke of a/the/his pen'. [=by signing a law, order, etc., which ends it]
Deciding to relocate the company was 'a stroke of genius'. [=a brilliant idea]
You can see the 'strokes' of the painter's brush throughout the painting.
(..) We need a plan that won't hurt her feelings or damage her property. Definitely don't look behind that poster, then. I could pretend to have a stroke. Do a gibberish foreign language. What if I did a gibberish foreign language like Star Wars? You'd like that, I bet. Dick. (..)2013 TvShow: Community Title: Cooperative Escapism in Familial Relations Season: 4 Episode 5