Closet/ˈklɑːzɪt/ Definition 1 of 5Pro Tip 1/3Storing Items Used for spaces specifically for keeping things organized and out of sight. After doing laundry, I put all the towels back into the linen closet. Pro Tip 2/3Private Space A personal area to keep items you do not want to display. She keeps her personal diaries in her bedroom closet. Pro Tip 3/3Variety of Sizes Closets can range from small nooks to large walk-in spaces. Their new house has a huge walk-in closet in the master bedroom.