Tablespoon

n. large spoon used for eating or serving food; cooking measure equal to 3 teaspoons or 1/2 fluid ounce

A tablespoon is a type of spoon used for serving.
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Noun
1. as much as a tablespoon will hold
(synonym) tablespoonful
(hypernym) containerful
2. a spoon larger than a dessert spoon; used for serving
(hypernym) spoon

(n.)
A spoon of the largest size commonly used at the table; -- distinguished from teaspoon, dessert spoon, etc.
  

An old-fashionned but convenient household measure of capacity. A tablespoon holds about 5 cc. A tablespoon = 3 teaspoons.