To make any object completely solid.
Hey Johnny! Would you solidize that lemon for me?
by Textbook posse November 2, 2015
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A friend who is not your best friend, however they are really close to you. You don't necessarily need to chill with them all the time like you would a best friend. You can even go weeks with out talking to them, but when you do chill its like you've never been apart. A solid will be there for you no mater what. They're a friend who can last a life time as apposed to a best friend, where your friendship could crumble over the years. Its just having a true genuine friend.
Pino, Emily, Lorena, Paola, Kdogg, and Nahaff are my solids for life.
by Lauren Feliciano August 10, 2008
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it means when a person is a sweat in fortnite and had a headshot and killed them in one shot. they think they make sense when they don’t and they aren’t that good.
*playing fort with my friend*

my friend: *gets headshot* that was solid
me:fucking loosah
by Sexylemur14 May 27, 2020
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someone who thinks themsleves hard
person 1 "dont mess wiv me bett who'd ya fink your speekin 2 ill deck you "
Person 2 "Sorry solid"
by x X x lucie x X x August 18, 2006
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When some thing is really hard to do!
Should be: That was really difficult
Is: Oh man that was solid!!!
by Stewart Luetchford January 13, 2004
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adj. originated as slang during the 80's meaning "cool" or "good" brought back to life in a small Pennsylvanian town
You: "Hey wanna go to the movies?"
Me: "Yeah, that's solid"
by whit November 27, 2004
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