swappˈer or swoppˈer noun

1. A person who swaps
2. A very big thing, a whopper (old slang)

swappˈing or swoppˈing noun and adjective

swap file noun (computing)

An area of the hard disk of a computer into which any information not immediately required may be moved, thus maximizing the available memory

swap line noun (economics)

A lending arrangement between central banks

swap meet noun

A gathering at which collectors, dealers, etc trade or barter

swap option noun (finance)

A right to exchange a sum of money at different rates on or before a certain date

swapˈ-shop noun

A shop, meeting, etc where goods are exchanged for other goods or services rather than for money