Periparus ater melanolophus, a subspecies of coal tit.

plural of grey crested tit

plural of black-crested tit

Sad because of a disappointment. / (obsolete, of a horse) Having the crest, or upper part of the neck, hanging to one side.

Having no crest / Having no coat of arms

(Northern England, birdwatching) the great crested grebe. / (informal) crested tit

plural of crestie

(often in combination) The property of being crested (or of having a specified type of crest)

In a crestfallen manner.

The quality of being crestfallen.