Top Definition
Having a ridiculous boner in the morning, or also having Auto-Mechanics class 1st Hour.
Kirk: Bro, i got Morning Steel!! I gotta go!

Ryan: Ok man, go control your boner!

Kirk: Nah man, Auto-Mechanics, 1st Hour!
by yerpy, money, money, money January 09, 2012
1 more definition
When morning wood just isnt the way to put it, morning steel is now the appropriate term

Usually masturbation is in need instead of trying to piss away the insane stiffness.
Bob - 'dude its so hard to take a piss in the morning with morning wood'

Bill - 'Try being me and having morning steel, you cant do anything but jack off to combat it'
by captain poontang August 04, 2010

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