lymphatic system

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The interconnected system of spaces and vessels between body tissues and organs by which lymph circulates throughout the body.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun anatomy In mammals, including humans, a network of lymph vessels and lymph nodes that transport fluid, fats, proteins, and lymphocytes to the bloodstream as lymph, and remove microorganisms and other debris from tissues.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the interconnected system of spaces and vessels between body tissues and organs by which lymph circulates throughout the body