v. （衣物）鼓起；翻腾，汹涌（billow 的过去式和过去分词）

Billow \Bil"low\, v. i. [imp. & p. p. {Billowed}; p. pr. & vb.
n. {Billowing}.]
To surge; to rise and roll in waves or surges; to undulate.
``The billowing snow.'' --Prior.