pocketknifeWiktionary 原文中文来自 ECDICTn.随身小折刀构词拆分pocket词根/词干+knife词根/词干词源说明From pocket + knife.释义（英文）名词 NounA knife small enough for carrying safely and handily in a pocket; usually a folding knife (with blades or tools that the user can fold or retract into the handle).词族相关词（1）clasp-knife