Real Dictionary

ch'in in American English
noun: a Chinese zither consisting of an oblong, slightly curved wooden box over which are stretched strings that are stopped with one hand and plucked with the other
noun: a dynasty in ancient China, 221–206 b. c., marked by the emergence of a unified empire and the construction of much of the Great Wall of China

chin
countable noun: Your chin is the part of your face that is below your mouth and above your neck.

Chin in American English
Chinese
the part of the face below the lower lip; projecting part of the lower jaw
to converse idly; chat, gossip, etc.
to pull (oneself) up, while hanging by the hands from a horizontal bar, until the chin is just above the level of the bar
noun: any of three dynasties that ruled in China, a. d.265–316 (the Western Chin), a.d.317–420 (the Eastern Chin), and a.d.936–46 (the Later Chin)
noun: the lower extremity of the face, below the mouth

chin in British English
noun: the protruding part of the lower jaw

Chin. in American English
abbreviation: China

Chin. in British English
abbreviation for: China