circular file - a wastebasket.
1.Also, Kirke. Also called Aeaea. Classical Mythology. the enchantress represented by Homer as turning the companions of Odysseus into swine by means of a magic drink.
2.a dangerously or irresistibly fascinating woman.
cisco - any of several whitefishes of the genus Coregonus, of the Great Lakes and smaller lakes of eastern North America.
circle jerk - mutual masturbation among three or more persons. Also applied analogically as stated by Urban Dictionary: When a bunch of blowhards - usually politicians - get together for a debate but usually end up agreeing with each other's viewpoints to the point of redundancy, stroking each other's egos. Basically, it's what happens when the choir preaches to itself.