knife

n. 刀；匕首

vt. 用刀切；（口）伤害

vi. 劈开；划过

中文词源

knife 刀，匕首

来自古英语cnif,刀，匕首。

knife: knife: [11] Knife is not a native English word, but a borrowing. It came from Old Norse knífr, which survives also in modern Swedish knif and Danish knif. It can be traced back to a prehistoric Germanic *knībaz, which also produced German kneif ‘cobbler’s knife’, and was borrowed by French as canif ‘knife’, but its previous ancestry is not known.
knife (n.): late Old English cnif, probably from Old Norse knifr, from Proto-Germanic *knibaz (cognates: Middle Low German knif, Middle Dutch cnijf, German kneif), of uncertain origin. To further confuse the etymology, there also are forms in -p-, such as Dutch knijp, German kneip. French canif "penknife" (mid-15c.) is borrowed from Middle English or Norse.
knife (v.): 1865, from knife (n.). Related: Knifed; knifing.

1. She produced the knife during arguments with her friends.: 在和朋友争吵的时候，她掏出了刀。

3. His surgical instruments were a knife and a pair of pincers.: 他的外科手术器械是一把刀和一把钳子。