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Webster's Dictionary (1865)

Chĕm'i-sĕtte', n.

noun

(shēm'ĕ-zĕt'), n. [Fr., diminutive of chemise. See supra.] An under-garment, worn over the chemise.

An illustration of a chemisette with a ruffled collar and a row of buttons down the front.
Chemisette.