flasher
noun
flash·er ˈfla-shər 
: one that flashes: such as
a
: a light (such as a traffic signal or automobile light) that flashes to catch attention
b
: a device for automatically flashing a light
c
: an exhibitionist who flashes
Example Sentences
We noticed a car at the side of the road with its flashers on.
Recent Examples on the Web As a detective who ridicules Seth Rogen’s troubled mall cop amid a hunt for a serial flasher, Liotta shines Jody Hill’s black comedy audiences couldn’t quite figure out. 
Ben Flanagan | Bflanagan@al.com, al, 26 May 2022 As possible solutions, board members talked about speed bumps, rumble strips, a stop sign, an enhanced crosswalk system and an additional flasher to warn motorists approaching the crossing. Scott Huddleston, San Antonio Express-News, 10 Apr. 2022 The result is ergonomic confusion, especially with audio controls, the headlight flasher, and the windshield washer fighting for space on the back of the wheel. Mike Duff, Car and Driver, 7 Mar. 2022 Serial stomach-flasher Emily Ratajkowski helped to bring midriff flossing into the mainstream last summer. Vogue, 23 Aug. 2021 Its flasher is loud enough to attract attention but subtle enough to still resemble something the pike wants to eat. Outdoor Life, 3 Aug. 2020 Tokarski, fishing with a #5 Jigging Rapala tipped with a minnow head, saw a good size mark on his flasher unit. Paul A. Smith, Milwaukee Journal Sentinel, 28 Mar. 2020 The officer attempted to pull over the vehicle, and the driver, 26-year-old Harris Howard, initially slowed down and even turned on his emergency flashers. Bisma Parvez, Detroit Free Press, 18 Feb. 2020 The new bus flasher light that zooms back and forth is a menace! oregonlive, 31 Jan. 2020 See More
Ben Flanagan | Bflanagan@al.com, al, 26 May 2022 As possible solutions, board members talked about speed bumps, rumble strips, a stop sign, an enhanced crosswalk system and an additional flasher to warn motorists approaching the crossing. Scott Huddleston, San Antonio Express-News, 10 Apr. 2022 The result is ergonomic confusion, especially with audio controls, the headlight flasher, and the windshield washer fighting for space on the back of the wheel. Mike Duff, Car and Driver, 7 Mar. 2022 Serial stomach-flasher Emily Ratajkowski helped to bring midriff flossing into the mainstream last summer. Vogue, 23 Aug. 2021 Its flasher is loud enough to attract attention but subtle enough to still resemble something the pike wants to eat. Outdoor Life, 3 Aug. 2020 Tokarski, fishing with a #5 Jigging Rapala tipped with a minnow head, saw a good size mark on his flasher unit. Paul A. Smith, Milwaukee Journal Sentinel, 28 Mar. 2020 The officer attempted to pull over the vehicle, and the driver, 26-year-old Harris Howard, initially slowed down and even turned on his emergency flashers. Bisma Parvez, Detroit Free Press, 18 Feb. 2020 The new bus flasher light that zooms back and forth is a menace! oregonlive, 31 Jan. 2020 See More Word History
First Known Use
1686, in the meaning defined above