wrong number


noun

(in telephoning)
  1. a call made to a number other than the one intended.
  2. the number or person reached through such a call.
Slang.
  1. the wrong person for a particular task, role, or situation: Me cook a gourmet dinner?—You've got the wrong number!
  2. an inadequate, disagreeable, or repulsive person: She's OK, but her brother's a wrong number.

British Dictionary definitions for wrong number

wrong number

noun

a telephone number wrongly connected or dialled in error or the person so contacted