Definition of north and south in US English:

north and south

adverb

  • Along a line running from north to south.

adjective

  • Running from north to south.

noun

  • Slang. The mouth.

Origin

Old English (in an earlier sense). From north + and + south.

Pronunciation

north and south

/ˌnɔːθ (ə)n(d) ˈsaʊθ/