Definition of no-brow in US English:

no-brow

adjective

humorous
  • Having, or regarded as having, little or no intellectual or cultural value; demanding or involving very little intellectual application.

noun

humorous
  • A person having, or regarded as having, few or no cultural interests or little intellect.

Origin

1920s; earliest use found in The New York Times Magazine. From no + brow, after lowbrow.

Pronunciation

no-brow

/ˈnəʊbraʊ/