Sunday, June 21, 2009

What is an umbo?


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: umbo

Why: In the In Touch Weekly crossword, #84 across: "Convex shape"
UMBO
Answer: 1. The boss or knob at the center of a shield.
2. Biology A knoblike protuberance arising from a surface, as the prominence near the hinge of a bivalve shell or the projection at the scale tip of a seed-bearing cone.
Anatomy A small projection at the center of the outer surface of the eardrum.

Source: TheFreeDictionary

The More You Know: The entry is accompanied by this helpful picture:


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