Definition - What does Grass mean?
Grass is a slang term for marijuana. It was most popular during the 1960s and 1970s. Using the word grass nowadays is considered to be a bit retro, but the expression is still a good, commonly understood alternative to any of the other expressions used to denote cannabis.
In cannabis culture, the word grass evokes the era of hippies and flower children. This is because during those days, using the word 'grass' as a stand-in for marijuana made it easier for people to talk about it openly, as cannabis use was highly illegal back in this era.
MaximumYield explains Grass
The term grass comes from the green color of cannabis plants and how it looks like grass, especially when it is in 'shake' form. Shake form looks a lot like freshly mowed grass. Also, when many plants grouped together first start growing, it looks green like a field of grass.
In addition, lower-quality pot looks like grass clippings, rather than the fat flowers that are more popular now. In the Hindu text Atharvaveda, cannabis is referred to as 'sacred grass'.
It could be the term grass has been applied to cannabis for all of perpetuity. Some smokers say that using the term grass is more classy than saying 'weed', as the term grass implies a product that is intentionally cultivated.
Use the term grass and other people will definitely know what you mean, but the term is not as widely used as other terms, such as herb, pot, or Mary Jane. It is all a matter of personal preference, but 'grass' is still a perfectly acceptable slang term used to mean smokeable or consumable plant material (rather than concentrates).