Main Entry:

¹bil·low

Pronunciation:

\ˈbi-(ˌ)lō\

Function:

noun

Etymology:

Old Norse bylgja; akin to Old High German balg bag — more at belly

Date:

1552

1: wave ; especially : a great wave or surge of water2: a rolling mass (as of flame or smoke) that resembles a high wave

— bil·lowy \ˈbi-lə-wē\ adjective