adjective, bil·low·i·er, bil·low·i·est.
Examples from the Web for billowy
I was wearing a rather huge, billowy Maxi skirt and I must have lost track of exactly where it all was while on loo.Penis Beakers and Constipated Dolls: What Mothers REALLY Want To Know|Tom Sykes|October 11, 2013|DAILY BEAST
Over the plains, apparently without end, was a sea of billowy clouds, shimmering with golden and pearly lights.Your National Parks|Enos A. Mills
The waving of the tree-tops is the billowy movement of a hidden delight.A Dish Of Orts|George MacDonald
It looked like a billowy sea of cotton-wool, but the airmen who had just emerged from it, had no comfort in its soft embrace.Round the World in Seven Days|Herbert Strang