D defs.my
Entry 1 sense Webster, 1913

Billowy

· Bil·low·y · IPA /ˈbɪ.ləʊ.(w)i/
01 a. Of or pertaining to billows; swelling or swollen into large waves; full of billows or surges; resembling billows.
  1. 1.
    Of or pertaining to billows; swelling or swollen into large waves; full of billows or surges; resembling billows.
    “And whitening down the many-tinctured stream, Descends the billowy foam.” Thomson.