Meaning of the Triskele / Triple Spiral / Triskelion. Derived from the Greek word Triskeles meaning three legs, the Triskele or Triple Spiral is a complex ancient Celtic symbol. Often referred to by many as a Triskelion, its earliest creation dates back to the Neolithic era, as it can be seen at the entrance of Newgrange, Ireland. However, the Triskele gained popularity in its use within the Celtic culture from 500BC onwards.
LINK / CITE ADD TO WORD LIST. noun. The definition of a slogan is a distinctive or identifying phrase often used in advertising or to represent a product. An example of a slogan is an advertising phrase associated with a particular company or product, such as the Pepsi Generation.
According to the book Creative Advertising by Charles Whittier:  A slogan should be a statement of such merit about a product or service that is worthy of continuous repetitive advertising; is worthwhile for the public to remember; and is phrased in such a way that the public is likely to remember it.