Entry 1 sense Webster, 1913 Cubby /(k?b"b?)/ · Cub·by · IPA /kʌbi/ 01 n. A snug or confined or secluded place; a small room or a snug space within a room. 1. A snug or confined or secluded place; a small room or a snug space within a room. Syn. snuggery, snug.