Webster dictionary was developed by Noah Webster in the beginning of 19th century. On this website, you can find definition for kinglet from the 1913 edition of Webster's Revised Unabridged Dictionary. Define kinglet using one of the most comprehensive free online dictionaries on the web.
1. A little king; a weak or insignificant king.
2. Any one of several species of small singing birds of the genus Regulus and family Sylviidae.
These remarks are made, not with any reference to the chickadee,- I admit no possibility of exaggeration in his case,- but as leading to a mention of the golden- crested kinglet. - "Birds in the Bush", Bradford Torrey.
As he spoke, for the first time it really came home to Frida's mind that Bertram Ingledew, standing there before her, regarded in very truth the Polynesian chief and Sir Lionel Longden as much about the same sort of unreasoning people- savages to be argued with and cajoled if possible; but if not, then to be treated with calm firmness and force, as an English officer on an exploring expedition might treat a wrathful Central African kinglet. - "The British Barbarians", Grant Allen.
When you see one kinglet about, you may be sure there are others not far away, for, except in the nesting season, its habits are distinctly social, its friendliness extending to the humdrum brown creeper, the chickadees, and the nuthatches, in whose company it is often seen; indeed, it is likely to be in almost any flock of the winter birds. - "Bird-Neighbors", Blanchan, Neltje.