Definition of rossie in US English:

rossie

noun

Irish English
informal
  • A spirited, outspoken, or independent woman.

Origin

1920s; earliest use found in James Joyce (1882–1941), writer. From Irish rásaí (pronounced/raːsiː/) vagrant, gossip, traveller woman, hussy, perhaps from rásaighe, genitive singular of rásach, in the same sense, of uncertain origin.

Pronunciation

rossie

/ˈrɒsi/