(noun.) biting and grinding food in your mouth so it becomes soft enough to swallow.
(noun.) a wad of something chewable as tobacco.
(verb.) chew (food); to bite and grind with the teeth; 'He jawed his bubble gum'; 'Chew your food and don't swallow it!'; 'The cows were masticating the grass'.
欧内斯特整理
西里尔整理