Definition of "chewing"

chewing¹

verb
1. present participle and gerund of chew

chewing²

noun
countable and uncountable, plural chewings
1. The act by which something is chewed on; mastication.
  Quotations
  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, Jennifer Bramseth, Bourbon Springs Box Set: Volume II, Books 4-6
2. (drugs) The consumption of (the juice from) the khat plant.
3. (drugs) The consumption of loose leaf tobacco juice from tobacco plants by chewing leaves near the cheek.