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Beak of a bivalve shell
Answer for the clue "Beak of a bivalve shell ", 4 letters:
umbo
Alternative clues for the word umbo
Word definitions for umbo in dictionaries
Wikipedia
Word definitions in Wikipedia
thumb|right|Cantharellula umbonata has an umbo. thumb|right|The cap of Psilocybe makarorae is acutely papillate. An umbo is a raised area in the center of a mushroom cap . Caps that possess this feature are called umbonate . Umbos that are sharply pointed ...
Wiktionary
Word definitions in Wiktionary
n. 1 (context biology English) A boss, or rounded elevation, or a corresponding depression, in a palate, disk, or membrane; as, the umbo in the integument of the larvæ of echinoderms or in the tympanic membrane of the ear. 2 (context zoology English) One ...
Usage examples of umbo.
The edges were obtuse, the caps fleshy, then corky, smooth, the upper ends not regular, oblique in the form of an umbo or little knob, the pellicles or outside layers thin and easily separated.