Bible Dictionaries
Siphonium

Webster's Dictionary

(n.) A bony tube which, in some birds, connects the tympanium with the air chambers of the articular piece of the mandible.

Bibliography Information
Webster, Noah. Entry for 'Siphonium'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​s/siphonium.html. 1828.