An acronym for “Low Integrity Gun Owner”. Usually (but not always) a middle aged white male, a LIGO loves owning guns so he can make conversation with his friends and kill animals, but would undoubtedly scream, turn around, and run if he ever faced real danger.
Ed: I heard Pete walked in on a deli being robbed, did he pull out his strap and blast?

Justin: No, Pete is a LIGO. He is more interested in shooting ducks than protecting innocent people.
by Big Cody Wyatt June 29, 2023
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The most kick-ass interferometer ever built. Consists of a 200W laser split through two 4km arms, bouncing back, and interfering with itself. Can detect changes of length of less than the diameter of a proton.
LIGO just detected the ripples in spacetime originating from two black holes merging together.
by (Gamma)(m)(c)^2 January 12, 2018
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Big party in latvian culture, where everybody are singing and drinking beer, getting laid. It is on 23th june.
Like a big party, where everybody have a great fun...
by Wolteers June 26, 2005
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A really common phrase only used by arxigikous pektes that wanna beat someone up.(meaning-Lets go a little bit!!!) Similar to yolo.

When you hear that phrase by someone run.
Person 1:Don't be a chicken.
Arxigiko person 2:Ok then GIA PAME LIGO!!!

Person1 : 100.000.000.000.000.000 thugs are coming to beat you up.
Hayate Kirino: OXI GIA PAME LIGO.
by Giapameligo August 20, 2017
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