shake out

Verb

also figuratively transitive idiomatic

(transitive, also figurative) To agitate a piece of cloth or other flexible material in order to remove dust, or to try to make it smooth and flat. / (nautical, transitive) To unfurl a reef from a sail

Japanese Meaning

布や柔らかい素材を振って、ほこりや汚れを落とし、平らに整える / 帆に巻かれたリーフを解放し、展開する（航海用語）

What is this buttons?

Before putting the coat away for the season, shake out the pockets and hang it in the closet.

Google Translation / DeepL Translation

コートをシーズンの間しまう前に、ポケットをよく振って中のゴミを落としてからクローゼットに掛けてください。

Details

Sense（1）

Tasks needed to complete Crossrail: … Trial run the Class 345s over many thousands of miles on the completed railway to shake out any problems and ensure the highest levels of safety and reliability when passenger service begins.

Google Translation / DeepL Translation

Details

Sense（2）

(nautical, transitive) To unfurl a reef from a sail

"Thunder!" he cried. "A week! I can't do that; they'd have the black spot on me by then. The lubbers is going about to get the wind of me this blessed moment; lubbers as couldn't keep what they got, and want to nail what is another's. Is that seamanly behavior, now, I want to know? But I'm a saving soul. I never wasted good money of mine, nor lost it neither; and I'll trick 'em again. I'm not afraid on 'em. I'll shake out another reef, matey, and daddle 'em again."

Google Translation / DeepL Translation