Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!

Gnomish

belu-

verb. to unroll, unfurl (intransitively), belly (of sails), swell

A verb appearing as belu- or belwa- in the Gnomish Lexicon glossed “unroll, unfurl (intransitively), belly (of sails), swell” in the Gnomish Lexicon of the 1910s (GL/22), clearly based on the early root ᴱ√VELU (or ✱ᴱ√BELU) “unroll” (QL/100).

@@@ maybe salvage belwa-?

belwa-

verb. to unroll, unfurl (intransitively), belly (of sails), swell