a steel beam, esp one with a cross section in the form of a letter H or I RSJ
noun 1. a person or thing that rolls. 2. a cylinder, wheel, caster, or the like, upon which something is rolled along. 3. a cylindrical body, revolving on a fixed axis, especially one to facilitate the movement of something passed over or around it. 4. a cylindrical object upon which something is rolled up: the […]
noun 1. a pen having a small moving nylon, plastic, or metal ball as a writing point
- Roller bandage
roller bandage roll·er bandage (rō’lər) n. A strip of material, of variable width, rolled into a compact cylinder to facilitate application.
noun, Machinery. 1. a bearing consisting of cylindrical or tapered rollers running between races in two concentric rings, one of which is mounted on a rotating or oscillating part, as a shaft. roller bearing noun 1. a bearing in which a shaft runs on a number of hardened-steel rollers held within a cage