Middle Primitive Elvish
kwǣ
root. onomatopoetic
kwǣnē
noun. small gull, petrel
There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.
Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.
An onomatopoeic root from The Etymologies of the 1930s serving as the basis for Elvish words for “small gull, petrel” (EtyAC/KWǢ). Similar words also appeared in The Feanorian Alphabet from the late 1930s, derived from ᴹ✶kwǣnē (PE22/32). This root is unusual in that it is the only published root using ǣ (an a-fortified e) as its root vowel.