1. (n.) A minute vessel connecting arterioles and venules\; fine; minute; very slender; having minute tubes or interspaces; having very small bore; as, the capillary vessels of animals and plants.

2. (a.) Pertaining to capillary tubes or vessels; as, capillary action.

3. (n.) A tube or vessel, extremely fine or minute.

4. (n.) A minute, thin-walled vessel; particularly one of the smallest blood vessels connecting arteries and veins, but used also for the smallest lymphatic and biliary vessels.

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