Top definition
1) to use available materials/tools and one's ingenuity to create a device for smoking marijuana; to Macgyver a pipe or bong
2) to create an especially complex or grand device for smoking, often using science to enhance or change the smoking experience in some way (ex: making the first vaporizer)

one who has mastered the technique of Ganjaneering
"Man...I'm so pissed that I forgot my piece. Luckily, I was able to ganjaneer a pipe out of a carrot, some toothpicks, and a knife."
by madaboutsyphilis July 24, 2008
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