malda adj. "yellow, of golden colour" (PE17:51), variant of malina. An earlier source (the Etymologies, entry SMAL) has malda as the noun "gold" but LotR gives malta, q.v., and according to VT46:14 the form malta originally appeared in the Etymologies as well. Since Quenya sometimes uses adjectives as nouns (see for instance fanya), malda could still be regarded as a valid side-form of the noun malta "gold".
Quenya
malina
yellow
malina
adjective. yellow, of golden colour
malda
yellow, of golden colour
malda
adjective. yellow, of golden colour
lalië-malina
noun. daffodil, (lit.) yellow laughter
malinornë
yellow-tree
malinornë noun "yellow-tree" (malina + ornë), fictional species of tree (Sindarin mallorn; in Quenya also called maldornë) (PE17:50). Cf. malinornélion "of yellow-trees"; see laurelindórenan lindelorendor... (LotR2:III ch. 4; cf. Letters:308). Malinornélion is partitive pl. genitive of malinornë (UT:167, normal pl. malinorni, UT:168).
tulca
yellow
tulca (3) ("k") adj. "yellow". Adopted and adapted from Valarin; the normal Quenya word for "yellow" is rather malina (WJ:399)
malina adj. "yellow" (SMAL, Letters:308), "yellow, of golden colour" (PE17:51). Malinalda *"Yellow-tree", a name of Laurelin (SA:mal-; evidently malina + alda), translated "Tree of Gold" in the Silmarillion index. Cf. also malinornë.