1 : of, relating to, or using gas (such as air or wind): a : moved or worked by air pressure. b(1) : adapted for holding or inflated with compressed air. (2) : having air-filled cavities.

What does it mean to call a woman pneumatic?

When a female is described as pneumatic it means she has large breasts (possibly artificially augmented by plastic surgery). To my mind, there's also the implication of her being both well-equipped and possibly available for bouncy bouncy / mattress dancing (slang euphemisms for sexual intercourse).

What does pneumatics mean in science?

Pneumatic means filled with or operated by compressed air. In general, pneumatic means related to air or wind, and pneumatics is the branch of physics that deals with the properties of air.