As a Noun: 1. The act of taking, having or using something which belongs to someone else, with their permission, for a period of time. English = borrowing. 2. The act of allowing someone else to take, have or use something with belongs to you for a period of time. English = lending. As a Verb or Adjective: 1. To take, have or use something which belongs to someone else, with their permission, for a period of time. English = borrow. 2. To allow someone else to take, have or use something with belongs to you for a period of time. English = lend.