Longman Dictionary of Contemporary English - swap(swop)

~1 v swapped, swapping 1 to exchange something with someone, especially so that each of you get what you want; trade2 (1)  (I liked her coat and she liked mine, so we swapped. | swap sth for sth)  (Adam swapped three of his stickers for three of Alex's. | swap sth with sb)  (I swapped hats with Mandy. | swap sb sth for sth)  (I'll swap you two of mine for one of yours.) 2 swap places also swap round BrE to let someone sit or stand in your place, so that you can have their place  (I want to sit by Val; can we swap places?) ~2 n informal 1 usually singular) an exchange of one thing for another  (a swap of arms for hostages | do a swap)  (I like your doll better; let's do a swap.) 2 something that has been or may be exchanged