Tra từ knife - Từ điển Oxford Advanced Learner 8th

knife [knife knives] noun, verb BrE [naɪf] NAmE [naɪf]
noun

(pl. knivesBrE [naɪvz] ; NAmE [naɪvz] )
a sharp blade with a handle, used for cutting or as a weapon
•knives and forks
•a sharp knife
•a bread knife (= one for cutting bread)
• He had been stabbed repeatedly with a kitchen knife.
• She was murdered in a frenzied knife attack.
see also ↑flick knife, ↑jackknife, ↑palette knife, ↑paperknife, ↑penknife, Stanley knife

Word Origin:
late Old English cnīf, from Old Norse knífr, of Germanic origin.

Thesaurus:
knife noun C
•A sharp knife is essential for carving.
blade • • dagger • • scalpel • • machete • • cleaver • • penknife • • switchblade •
a sharp knife/blade/dagger/penknife
cut sth with a knife/blade/scalpel/machete/penknife
stab sb/sth with a knife/blade/dagger
chop sth with a knife/machete/cleaver

Example Bank:
•Each word he uttered was a knife in her heart.
•He and his gang had a knife fight one night.
•He is to go under the surgeon's knife again on Thursday.
•He plunged the knife deep into her heart.
•He pressed the knife tighter against her throat.
•He suddenly pulled a knife on me.
•He was slumped over his desk with a knife protruding from his back.
•He waved his knife in her face threateningly.
•Just to twist the knife, the filmmakers have provided a surprise ending.
•She carries a knife in her bag now.
•She felt a knife slice her wrist open.
•She picked up her knife and fork and started to eat.
•She pointed her knife at Richard.
•She put the knife to his throat to frighten him into silence.
•She stabbed him in the back with a 12-inch knife.
•That knife doesn't cut very well— it needs sharpening.
•The lines can be cut with a craft knife.
•Use a sharp knife to cut away the spare dough.
•a frenzied knife attack
•a set of kitchen knives
•A sharp carving knife is essential when carving any joint.
•Chuck drew his hunting knife from its sheath.
•Sara placed her knife and fork neatly on the plate.
•The raider threatened him with a 6-inch kitchen knife before escaping.
•a butter/steak knife
•a kitchen/carving/hunting knife
Idioms: ↑knives are out ▪ ↑like a knife through butter ▪ ↑put the knife in ▪ ↑put the knife into somebody ▪ ↑turn the knife ▪ ↑under the knife

verb ~ sb
to injure or kill sb with a knife
• She knifed him in the back.
Verb forms:

Word Origin:
late Old English cnīf, from Old Norse knífr, of Germanic origin.

Syn: ↑stab