How do we get vegetable oil from veggies when veggies aren't even oily?

Maybe avocadoes are a bit oily, but most veggies if you squish them are just pulp and watery, not oily, juice. Where does this oiliness come from?How do we get vegetable oil from veggies when veggies aren't even oily?
It doesn't come from vegetables as such; it is from other things such as rape seed or corn (which is a legume), which is termed vegetable because it isn't animal.How do we get vegetable oil from veggies when veggies aren't even oily?
Vegetable fats and oils are derived from plants and are composed of triglycerides. Nominally, oils are liquid at room temperature, and fats are solid; a dense brittle fat is called a wax. Although many different parts of plants may yield oil, [1] in commercial practice oil is extracted primarily from the seeds of oilseed plants.





The temperature-based distinction between oils and fats is imprecise, since definitions of room temperature vary, and typically any one substance has a melting range instead of a single melting point.





Vegetable fats and oils are both edible and inedible, and include processed linseed oil, tung oil, and castor oil used in lubricants, paints, cosmetics, pharmaceuticals, and other industrial purposes. Although thought of as esters of glycerin and a varying blend of fatty acids, these oils contain free fatty acids and diglycerides as well...



Corn oil, Soya oil, Peanut oil, Sunflower/Safflower oil, Olive oil, all of these veg of sorts when crushed and some fermented have an oil property like the one young lady said a waxy overview, some are extracted by crushing and pressing others by crushing heating and then pressing, when making bourbon whisky a oil layer from the corn is formed and alot is refined into cooking oil.





Rapeseed or Canola was used during the Second World war as a lubricant for airplanes, here in Canada it is the No 1 cooking oi used by households, I like peanut oil also but more for Asian dishes, I get one from Hong Kong it is the Lions Head brand, all are good for you nutritionally.
From vegetables that are oily!
but vegetarians are such nice people...why would you want to extract oil from them?!? (wink wink)