Definition of subalpine warbler in US English:

subalpine warbler

noun

  • A small warbler, Sylvia cantillans (family Sylviidae), the male of which is chiefly blue-grey above and reddish below, and which breeds in southern Europe, Turkey, and North Africa and typically frequents dry scrubby hillsides and ravines.

Origin

Early 19th century; earliest use found in James Francis Stephens (1792–1852), entomologist.