1) Away from the elements 2) Certain entrance 3) Covered 4) Enclosed 5) Exclusively Anglo word 6) Exclusively Saxon word 7) Homebound 8) Inside 9) Inside a house or building 10) Interior 11) Kind of baseball 12) Kind of games 13) Kind of plumbing 14) Kind of pool 15) Kind of swimming pool 16) Like a game at the astrodome 1) Inside 2) Interior 
• (a.) Done or being within doors; within a house or institution; domestic; as, indoor work.
intended for operation under normal ambient conditions in a building
In'door` adjective Done or being within doors; within a house or institution; domestic; as, indoor work. 
[adj] - within doors
adjective within doors; `an indoor setting`
occurring, used, etc., in a house or building, rather than out of doors: indoor games.