tile (t?l)n.1. A thin, flat or convex slab of hard material such as baked clay or plastic, laid in rows to cover walls, floors, and roofs.2. A short length of pipe made of clay or concrete, used in sewers and drains.3. A hollow fired clay or concrete block used for building walls.4. Tiles considered as a group: bought tile for the kitchen.5. Games A marked playing piece, as in mahjong.tr.v. tiled, til·ing, tiles To cover or provide with tiles.[Middle English, from Old English tigele, from Latin t?gula, from tegere, to cover; see (s)teg- in Indo-European roots.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.