1. Swelling or swelled into billows.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• billoon,
• belloy,
• billary,
• billly,
• bilow,
• bilogy,
• bollow,
• zillow,
• billey,
• billon,
• bioloy,
• ballony,
• bllody,
• biullow,
• billowey,
• bilowy,
• byllowy,
• bollwom,
• bulloky,
• biblilogy

• bile,
• bellow,
• billy,
• bully,
• bialy,
• billy-ho,
• Billye,
• below,
• Billa,
• biello,
• bill,
• Bilyeu,
• Billi,
• belly,
• billow,
• biel,
• blow,
• billows,
• Biele,
• Ballow,
• biehl,
• billyo,
• billyoh.

The adjective form of the word "billowy" is "billowing".

The plural form of the word "billowy" is "billowies".

The singular form of the word "billowy" is "billow"