noun. A light coming from the side.

noun. Either of two lights, red to port, green to starboard, shown by ships at night.

noun. A piece of incidental or contrasting information.

noun. An additional activity; a sideline.

noun. A light found at the side of something; especially of a vehicle.

noun. A window found at one or both sides of a door.

noun. light carried by a boat that indicates the boat's direction; vessels at night carry a red light on the port bow and a green light on the starboard bow

"Interesting sidelight is that Joe Roberts represents District 5, the same district represented by Wayne Bryant, the currently under indictment senator."

light  light source  

absentmindedness  backcloth  conspicuousness  discursiveness  enthralment  

account  acquaintance  announcement  blue book  briefing