"Sign" means a name, identification, emblem, symbol, trademark, flag, banner, pennant, description, display, or illustration which is directly or indirectly affixed to, painted upon, represented upon, or made visible in any manner whatsoever upon a building, manmade object, natural object, ground, structure, parcel, or lot, and which is designed, intended, or used to convey a message, announce, identify, make known, give direction, or direct attention to an object, product, place, activity, person, institution, organization, idea, concept, or business, and which is visible from an adjacent lot or street.