pocketknife
n. 隨身小折刀
1. a knife with a blade that folds into the handle; suitable for carrying in the pocket
Steven killed the bird with his pocketknife.
史蒂文用隨身帶的小刀殺死了這隻小鳥.
I got a really good pocketknife for $ 10.
我花十美元買了一把非常好的摺疊刀.
Now, use your pocketknife to touch the mica and see what will happen.
現在你用小刀去觸及岩石中的雲母,看看會產生什麼現象.