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.
noun, plural novelties. 1. state or quality of being novel, new, or unique; newness: the novelty of a new job. 2. a novel occurrence, experience, or proceeding: His sarcastic witticisms had ceased being an entertaining novelty. 3. an article of trade whose value is chiefly decorative, comic, or the like and whose appeal is often transitory: