开刃 - Zhictionary

Zhictionary

开刃

開刃

kāirèn

to edge a knife, scissor, sword etc

to sharpen (a new knife or pair of scissors) before use

刀、剪等第一次使用前先磨利，称为「开刃」。

重編國語辭典

将刀剑开锋

Entry Composition

to open (transitive or intransitive)
(of ships, vehicles, troops etc) to start
to turn on; to put in operation; to operate; to run
to boil
to write out (a prescription, check, invoice etc)
(directional complement) away; off
carat (gold)
abbr. for Kelvin, 开尔文 Kāiěrwén
abbr. for 开本 kāiběn, book format