A neologism for a “pearl” coined by Paul Strack on 2022-04-10 on the Vinyë Lambengolmor Discord Server (VLDS) as a combination of ëar “sea” and √SIL “shine”, so literally “sea-sheen”. It replaced an earlier neologism ëassar by Elaran where the second element was sar “(small) stone”, because “sea-stone” is a bit too prosaic.
Quenya
marilla
pearl
ëarsil
noun. pearl, (lit.) sea-sheen
ëassar
noun. pearl, (lit.) sea-pebble/stone
marilla noun "pearl" (LT1:265)