Pronunciation: (hOO'zis), [key]
—pl. -sis•es. 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. Also,whosis.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.