A bloodline on the ROBLOX game lightsaber battles 2. (borderline edgy but not quite there) Always seems to gather in groups. They all have different wacky names so you will know when you're facing a helios.
by neverstopcoping May 15, 2021

A lengthy "weedy" (i.e., colorful but insipidly boring) message sent by flashing a mirror using Morse code.
Native Americans used smoke-signals and African natives in da jungle used drums to speak to each other over long distances, but these forms of communicating took quite a lot of effort and/or preparation, so generally they only used said methods for truly-important messages. Standing on a sunny hilltop and wobbling a mirror is comparatively easy, though, and so a lot of da messages conveyed therein tend to be nothing much except a lotta helio-trope.
by QuacksO January 18, 2020

helio is a tall, skinny gamer boy who probably wears glasses. he’s best at pvp games but is still focused on academics and is quite smart
boy 1: man fuck helio he is too good at this game
boy 2: i know man! he also beat me in school. fuck helio
boy 2: i know man! he also beat me in school. fuck helio
by imaprettyboy69 December 20, 2021

Helios Airways also known as suicide Airways, is an airline that many people who wish to commit suicide will fly with. In 2005 the airline was sued because tourists mistook it for a normal airline resulting in their untimely deaths.
by Sh1tm4n May 23, 2018
