A trailer park is an area where people can pay to park their trailers and live in them.
[US]regional note: in BRIT, use caravan site
trailer park in British English
noun
US
a mobile home site
trailer park in American English
US
an area, usually with piped water, electricity, etc., designed to provide rental space for trailers, esp. mobile homes to be parked for a long or short time
Examples of 'trailer park' in a sentence
trailer park
Mr See was apparently walking from his home in a trailer park to the lake shore, about a mile away across the tracks.