Dertrotheca
Pronunciation : Der`tro*the"ca
Part of Speech : n.
Etymology : [NL., fr. Gr. (Zo?l.)
Definition : Defn: The horny covering of the end of the bill of birds.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder