Definition of ice cap:
(n) :
A permanent expanse of ice encompassing a large geographical area, as for example in Earth's polar zones (polar ice) or at high elevation. [from 19th c.]
(n) :
(medicine, historical) An ice pack designed to be worn on the head. [from 19th c.]
(n) :
(food) Alternative spelling of iced capp. [An iced coffee made by adding ice to a cappuccino.]