noun, plural whoo·sis·es. Informal.
an object or person whose name is not known or cannot be recalled: It's the whoosis next to the volume control.
a person or thing considered typical or illustrative: the usual paragraph about the party given by Mme. Whoosis.
Origin of whoosis
First recorded in 1920–25; alteration of phrase who's this
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Related Words for whosisgear, means, appliance, mechanism, machine, machinery, device, gizmo, jigger, doodad, gimmick, paraphernalia, dingbat, supplies, contraption, widget, provisions, outfit, job, tackle
Examples from the Web for whosis
Historical Examples of whosis
I did have my thoughts about you, same as that Whosis, I must say.
She looked wild enough to be called a “Whosis,” whatever kind of supernatural apparition that might be.