sesame seed
US /ˈses.ə.mi ˌsiːd/
UK /ˈses.ə.mi ˌsiːd/

1.
the small, flat, oval, edible seed of the sesame plant, used in cooking and as a source of oil
:
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Sprinkle sesame seeds on top of the bread before baking.
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Tahini is a paste made from ground sesame seeds.