Entry 1 sense Webster, 1913 Whatnot /(hwŏt"nŏt)/ · What·not · IPA /ˈwʌt.nɑt/ 01 n. A kind of stand, or piece of furniture, having shelves for books, ornaments, etc.; an étagère. 1. A kind of stand, or piece of furniture, having shelves for books, ornaments, etc.; an étagère.