Real Dictionary

junior college
countable noun: In the United States, a junior college is a college that provides a two-year course that is usually equivalent to the first two years of a regular undergraduate course.

junior college in American English
a school offering courses for two years beyond high school, either as the first two years of a standard four-year college program or as a complete career-training program resulting in a certificate or an associate degree
noun: a collegiate institution offering courses only through the first one or two years of college instruction and granting a certificate of title instead of a degree

junior college in British English
noun: an educational establishment providing a two-year course that either terminates with an associate degree or is the equivalent of the freshman and sophomore years of a four-year undergraduate course