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1.
The process of concealing an erection by securing it to the body with the waistband from an undergarment or pants.
I accidentally got a boner when we were watching the video on herpes in class today, luckily I was nibbing the entire time and no one noticed. Phew!
by Carmit March 12, 2008
 
2.
nibbing To go through someones personal belongings.
Kelly caught her brother Tommy nibbing in her closet drawer.
by sarahedutton October 28, 2007
 
3.
To remove a nib from a stone sample
I spent all day nibbing the green stone.
by kwsqueeks July 11, 2014