Definition of round-the-houses in English:

round-the-houses

noun

British
  • Slang. Trousers.

adjective

British
  • Of a race (especially a motor race): following a course around the streets of an urban area.

Origin

Mid 19th century. From round + the + the plural of house. Originally (as noun) rhyming slang for trousers. In some forms from round + me, variant of my + the plural of house.

Pronunciation

round-the-houses

/ˌraʊn(d)ðəˈhaʊzɪz/