An adjective appearing in the Gnomish Lexicon of the 1910s as G. {belum >>} belin “expanded, unrolled, unfurled, set (of sails)”, based on the verb G. belu- “unroll, unfurl” (GL/22).
Neo-Sindarin: Since I retain the Neo-Root ᴺ√BELU “unroll, ✱unfurl” to serve as the basis for “sail” words, I would retain and adapt this Gnomish adjective as ᴺS. belen “expanded, unrolled, unfurled, set (of sails)”.
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-?