(anatomy) muscle of mastication

food in general; provisions / a specific food / one's diet, what one eats.

efficiency

(physiology) masticate / digest, understand

(physiology) mastication / digestion, understanding

muscle / tendon / have an aptitude / vein / (usually in place names) road

a bite of food

to bite / to chew / to fumble one's words; to mispronounce

against one's will

hard, tough, stiff / stubborn