dome

A dome is traditionally supported primarily by a cylindrical or polygonal drum; it may be …© Merriam-Webster Inc.
Take a 3-minute break and test your skills!
May 27, 2015
riot act Hear it
a vigorous reprimand or warning
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears