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1.
Rookie, beginner, n00b.
Man, I was picking up chicks at the dance last night, and John only had 1 number. What a tyro!
by moofoo February 15, 2005
 
2.
Beginners in learning something. Plural form of tyro.
The objective is to provide tyros with an introduction to the instruments which will be used to assemble digital circuits.
by Kyle Davis1 January 07, 2008
 
3.
Noun-(ti-row)
Some one who does graffiti, but really sucks at it, so their pieces look like vomit, and they have to write and excuse next to every piece they do because of how bad it is.
Damn you see the kid getting up on the train station the other day?

Yeah, man he sucks, hes a tyro.
by Crack hea' mutha fucka April 30, 2008