Definition of "vasal" [vasal]

• Of, relating to, or connected with a vessel or duct of the body. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "If such surgery is unsuccessful, the following techniques which are less controversial because no testicular tissue is damaged or removed may be utilized: percutaneous, microepididymal or vasal sperm aspiration."
• "NEWMAN: As the caffeine that the body is so used to, wears out of the system since caffeine is usually a vasal constrictor, it narrows the blood vessels."
• "The alliance did him no good; it was revealed, to the court of Nineveh by the Assyrian party in Ephraim, and Hoshea was immediately seized as a rebellious vasal, shut up in prison, and apparently treated with the utmost indignity."