whoosis or whosis [hoo-zis]
noun, plural whoosises. Informal.
1. an object or person whose name is not known or cannot be recalled: It's the whoosis next to the volume control.
2. a person or thing considered typical or illustrative: the usual paragraph about the party given by Mme. Whoosis.
Origin: First recorded in 1920-25; alteration of phrase who's this
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