Often incorrectly labeled a "supplement" (negative connotation) by the popular media, protein powder is powdered food consisting mainly of the macronutrient protein. It is used by athletes and bodybuilders to more easily obtain high levels of daily protein intake, a condition advantageous toward muscle gain.

There are different kinds of protein powders, with whey protein being the most popular.

n. This is the resulting powder after you have depositing cum into (or onto) your cum dumpster (see also fuck buddy). Once this ejaculate dries and is rubbed or brushed against, it produces a fine powder known as protein powder.