Definition of chinny:
(adj) :
Having a prominent chin.
(adj) :
(boxing) Having a sensitive chin.
(adj) :
(colloquial) Given to talk, talkative.
(n) :
(informal) A chinchilla.
(n) :
(slang) An opaque white chalk marble with colored stripes.
(n) :
An exercise similar to an abdominal crunch, performed by lying flat on one´s back and then bringing the knees toward the chest while simultaneously raising the chest to meet the knees.