umbo
(noun) a slight rounded elevation where the malleus attaches to the eardrum
Source: WordNet® 3.1
umbo (plural umbones or umbos or umboes)
(biology) A boss, or rounded elevation, or a corresponding depression, in a palate, disk, or membrane. For example the umbo in the integument of the larvæ of echinoderms or in the tympanic membrane of the ear.
(zoology) One of the lateral prominences just above the hinge of a bivalve shell.
(mycology) A bump or protrusion on the top of the cap.
(historical) The boss of a shield, at or near the middle, and usually projecting, sometimes in a sharp spike.
• ombu
Source: Wiktionary
Um"bo, n.; pl. L. Umbones, E. Umbos. Etym: [L.]
1. The boss of a shield, at or near the middle, and usually projecting, sometimes in a sharp spike.
2. 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.
3. (Zoöl.)
Definition: One of the lateral prominence just above the hinge of a bivalve shell.
Source: Webster’s Unabridged Dictionary 1913 Edition
2 April 2025
(adjective) secret or hidden; not openly practiced or engaged in or shown or avowed; “covert actions by the CIA”; “covert funding for the rebels”
According to Guinness World Records, on 25 September 2016, the Birla Institute of Management Technology (India) in Uttar Pradesh, India, constructed the largest coffee cups pyramid consisting of 23,821 cups. They used paper takeaway coffee cups to build the pyramid.
