An old term for not saying Jesus Christ, thus not using Christ's(God's) name in vain and not breaking one of the 10 Commandments or blaspheming. Usually used with emphasis.
Now
people say: Jesus!, Jesus Christ!, geez!, or geez Louise! instead.
The term is older than the character from Disney films: a talking, singing, and
fancy-looking
cricket.
Jiminy
cricket that marine just gave me a
hot-foot!!...I'll kill him!!!
Did you see what that
tornado did to that old barn--jiminy crickets!