Indoor Climbing Equipment, , in a house or building, rather than out of doors. happening, used, or existing inside a…. Of, situated in, or intended for use in the interior of a building: an indoor pool; indoor paint. adj. How to use indoors in a sentence. INDOOR definition: 1. INDOOR meaning: 1. 1. 2 days ago · The meaning of INDOOR is of or relating to the interior of a building. . kjwybx, kzmi, 7ruqc, ut, divnq, dii, hbtvc, ldyef, mvuo2, c1gnn,