Vanquish v. t. : To conquer, overcome, or subdue in battle, as an enemy.

Vanquish v. t. : Hence, to defeat in any contest; to get the better of; to put down; to refute.

Vanquish n. : A disease in sheep, in which they pine away.

Example:
What is the difference between Aston Martin Vantage, Vanquish and the DB Series?

Taxonomy
spam email, email security, anti-spam, email tools, Security Service, Vanquish Labs, Stop spam, anti-virus, spyware, junk mail, identity theft, business solution, no-risk trial, self-learning, Smart Filter, Adaptive, symbol, confidence.

Defination from the web:
Offers anti-spam software.