Zardoz   A pretty good science fiction movie starring Sean Connery and Charlotte Rampling

Zebra   A black and white striped horse.

Zelazny, Roger   One of the better Science Fiction writers and editors. My personal favorite is "Jack of Shadows"

Zero Tolerance   Descriptive of any policy that states no deviation will be allowed. Usually applied against anything deemed harassment. A great theory, but rarely appropriate or fair in application. It's an attempt to legislate social reality.

Zoology   Study of animals

ZZ Top   Bluesy rock group from Texas. They have an outlaw/cowboy image.