noun
1.
a. : 15 minutes
b. : any of the quarter points of an hour
listened apprehensively as the clock chimed successive quarter hours
2. : an hour a week for an academic quarter devoted to class meetings — compare semester hour
noun
1.
a. : 15 minutes
b. : any of the quarter points of an hour
listened apprehensively as the clock chimed successive quarter hours
2. : an hour a week for an academic quarter devoted to class meetings — compare semester hour
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012