Sindarin 

melillin

noun. daffodil, (orig.) yellow song

Elements

WordGloss
malen“yellow, yellow, [ᴱN.] yellowish, pale, wan, sickly”
lind“song, chant, singing; singer, song, chant, singing, [N.] air, tune; [N. and S.] singer”
Sindarin Group: Eldamo - neologism/reconstructions. Published by