1swap also Brit swop 
/ˈswɑ:p/ verb
swaps; swapped; swap·ping /ˈswɑ:p/ verb informal 1 : to give something to someone and receive something in return : to trade or exchange (things) [+ obj] ▪ He swapped his cupcake for a candy bar. ▪ He swapped desserts with his brother. = He and his brother swapped desserts. ▪ I'll swap my sandwich for your popcorn. = I'll swap you my sandwich for your popcorn. ▪ I swapped seats with my sister so she could see the stage better. ▪ We often get together and swap [=exchange] recipes. ▪ We spent some time swapping stories about our college days. [=telling each other stories about our college days] [no obj] ▪ I liked her blue notebook and she liked my red one, so we swapped. ▪ He wanted the window seat so we swapped. = (Brit) He wanted the window seat so we swapped over. 2 : to replace (something) with something else [+ obj] ▪ He swapped (out) his hard drive for a bigger one. ▪ The nurse swapped [=switched] the patients' charts by mistake. [no obj] ▪ (Brit) Our company decided to swap over to a new supplier.
