Having two points or cusps, as the crescent moon.(adjective)
A bicuspid tooth, especially a premolar.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "bicuspid" in a sentence
"Mine was caused by a congenital defect I was born with called a bicuspid aortic valve."
"The auriculo-ventricular valve in the left side is composed of two flaps, hence it is called the bicuspid valve; in the right side this valve has three flaps and is called the tricuspid valve."
"Boone will have the operation - technically called bicuspid aortic valve aneurysm surgery - at Stanford University Hospital in California, and he plans to schedule it in the coming days."