weltering

1. gerundparticiplepresentpresent participle and gerund of welter

   While weltering in the purple stream That dyed their garments' fold, Their flowing curls profusely lay, Bright chesnut blent with gold.

   1827, Lydia Sigourney, Poems, Carloman and Merovee, page 82

plural welterings

1. The motion of something that welters; a billowing.

   They may have extended, it is said, over only a few provinces of Central Asia, in which, when all was life and light in other parts of the globe, there reigned for a time only death and darkness amid the welterings of a chaotic sea […]

   1854, Hugh Miller, The Two Records: The Mosaic and the Geological