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Slang term for pen (non-US)
John squinted to read Dave's number and sighed in frustration. In haste, he'd written it on the back of his hand in biro, and now, to his dismay, it was smudged illegibile.
biro by veganopolis September 20, 2006
short for biromantic asexual — you are romantically attracted to both genders but not sexually
biro by gogyWhip March 3, 2021
It's the female version of bro, used to address a female friend. Let's make this a thing!
Biro, I believe in you.

Muskan : I wish I did too. But thanks, biro.
Biro by Twelfthiewithoutselfies October 2, 2019
A demonic chungus, thirsty for blood and victory. He oftens uses Jojo References and defends humanity from Lord Obamos
Biro by Pizistrat October 28, 2020
Slang term for pen (non-US)
John squinted to read Dave's number and sighed in frustration. In haste, he'd written it on the back of his hand in biro, and now, to his dismay, it was smudged illegibile.
biro by veganopolis September 19, 2008

biro jam 

one piece of paper , 2 or more people .
everyone draws (or can take turns) .
the topic can be varied , most ive seen involve an arena , stickmen and weapons... ^_^
birojamming with some friends
biro jam by =virus.exe= October 1, 2004