whose

1. 1
   of whomdeterminerrelative

   Used to say something belongs to or is connected with the person or thing just mentioned.

   That is the man whose dog bit me.

   My aunt, whose house we stayed in, is a teacher.

   UsageYou can use it for things too: a car whose door is broken.

   Note
2. 2
   asking ownerdeterminerinterrogative

   Asks which person a thing belongs to, in a question.

   Whose coat is this on the chair?

   Whose turn is it to cook tonight?

   UsageWhose asks who owns something; who's means "who is" or "who has".

   Note
3. 3
   asking ownerpronouninterrogative

   Asks which person's thing is meant, with no noun after it.

   Two bags were left behind. Whose is this?

   I found a phone. Whose could it be?

   Note

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