Any of four species of passerine birds in the Ptyonoprogne genus of the swallow family, including the Eurasian crag martin (Ptyonoprogne rupestris) and the rock martin (Ptyonoprogne fuligula (species)).
Modern English dictionary
Explore and search massive catalog of over 900,000 word meanings.
Word of the Day
Get a curated memorable word every day.
Challenge yourself
Level up your vocabulary by setting personal goals.