King"let (k&ibreve;ng"l&ebreve;t), n. 1. A little king; a weak or insignificant king. Carlyle.

2. (Zoöl.) Any one of several species of small singing birds of the genus Regulus and family Sylviidæ.

&fist; The golden-crowned kinglet (Regulus satrapa), and the rubycrowned kinglet (R. calendula), are the most common American species. The common English kinglet (R. cristatus) is also called golden-crested wren, moonie, and marigold finch. The kinglets are often popularly called wrens, both in America and England.
[1913 Webster]