নিচের কোনটি একবচন ?

Explanation:

Correct Answer is: Knife
Noun: knife; Plural noun: knives
(An instrument composed of a blade fixed into a handle, used for cutting or as a weapon.)
Similar: cutting tool, blade, cutter, a cutting blade forming part of a machine.
verb: knife; 3rd person present: knifes; past tense: knifed; past participle: knifed; gerund or present participle: knifing