Merriam-Webster Collegiate Dictionary - colonial

 I. adjective  Date: 1768  1. of, relating to, or characteristic of a colony  2. often capitalized of or relating to the original 13 colonies forming the United States: as  a. made or prevailing in America during the ~ period ~ architecture  b. adapted from or reminiscent of an American ~ mode of design ~ furniture  3. forming or existing in a colony ~ organisms  4. possessing or composed of colonies a ~ empire  • ~ize transitive verb  • ~ly adverb  • ~ness noun  II. noun  Date: 1798  1. a member or inhabitant of a colony  2.  a. a product (as a coin or stamp) made for use in a colony  b. a product exhibiting ~ style; especially often capitalized a house built in the neoclassical style of the American ~ period