Definition of “whose” - Learner’s Dictionary

whose

pronoun, determiner us uk /huːz/
Whose pen is that?Whose job was it to ensure the door was closed properly?Whose essay was the best?Whose version of events are you going to believe?Whose skills are best suited to this job?
QUESTIONS

B1 used to ask who something belongs to or who someone or something is connected with:

Whose gloves are these?
Whose car shall we use?
CONNECTED WITH

B1 used to say that something or someone is connected with or belongs to a person:

She has a brother whose name I can't remember.

(Definition of “whose” from the Cambridge Learner's Dictionary © Cambridge University Press)