 Summer of '69  is a song recorded by Canadian recording artist Bryan Adams, from his fourth studio album, Reckless (1984). The song was written by Adams and Jim Vallance, a long-time writing partner of Adams.
â¢ UNDULATION (noun). The noun UNDULATION has 3 senses: 1. an undulating curve. 2. wavelike motion; a gentle rising and falling in the manner of waves. 3. (physics) a movement up and down or back and forth. Familiarity information: UNDULATION used as a noun is uncommon.
Full Definition of ROLL. transitive verb. 1. a: to impel forward by causing to turn over and over on a surface b: to cause to revolve by turning over and over on or as if on an axis d: to form into a mass by turning over and over e: to impel forward with an easy continuous motion.