1. Noun
One who contends for the prize in public games.
2. Noun
(biochemistry) a drug that can combine with a receptor on a cell to produce a physiological reaction
Vocabulary classified under Medicine and healthcare
3. Noun
a muscle that contracts while another relaxes; "when bending the elbow the biceps are the agonist"
Vocabulary classified under Medicine and healthcare
4. Noun
the principal character in a work of fiction
Vocabulary classified under Literature and rhetoric
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