Flanged railway wheel. A flange is an external or internal ridge, or rim (lip), for strength, as the flange of an iron beam such as an I-beam or a T-beam; or for attachment to another object, as the flange on the end of a pipe, steam cylinder, etc., or on the lens mount of a camera; or for a flange of a rail car or tram wheel.
noun, plural subtleties. 1. the state or quality of being subtle. 2. delicacy or nicety of character or meaning. 3. acuteness or penetration of mind; delicacy of discrimination. 4. a fine-drawn distinction; refinement of reasoning: the subtleties of logic.
(rÉªËfaÉªnmÉnt) n. 1. the act of refining or the state of being refined. 2. a fine or delicate point, distinction, or expression; a subtlety. 3. fineness or precision of thought, expression, manners, etc; polish or cultivation. 4. a device, change, adaptation, etc, designed to improve performance or increase efficiency.