Definition of roughback in English:

roughback

noun

  • Any of several flatfishes with rough skins, especially the long rough dab (American plaice), Hippoglossoides platessoides (also "roughback fluke").

Origin

Late 18th century; earliest use found in John Sinclair (1754–1835), agricultural improver, politician, and codifier of ‘useful knowledge’. From rough + back.

Pronunciation

roughback

/ˈrʌfbak/