chewing noun3 •The act by which something is chewed on; mastication.And while the dog and the cat buses suffered considerable damage from the trapped animals' excretions, clawings, and chewings, the bus with the skunk was declared unsalvageable. — 2016 •The consumption of (the juice from) the khat plant. •The consumption of loose leaf tobacco juice from tobacco plants by chewing leaves near the cheek. formschewings