1. small birds resembling warblers but having some of the habits of titmice
The Collaborative International Dictionary of English v.0.48:
Kinglet \King"let\, n.
1. A little king; a weak or insignificant king. --Carlyle.
2. (Zool.) Any one of several species of small singing birds
of the genus Regulus and family Sylviid[ae].
Note: The golden-crowned kinglet (Regulus satrapa), and the
rubycrowned kinglet (Regulus calendula), are the most
common American species. The common English kinglet
(Regulus cristatus) is also called golden-crested
wren, moonie, and marigold finch. The kinglets are
often popularly called wrens, both in America and
WordNet (r) 3.0 (2006):
n 1: small birds resembling warblers but having some of the
habits of titmice