bolus
noun
[ ˈbəʊləs ]
• a small rounded mass of a substance, especially of chewed food at the moment of swallowing.
• "mucin holds the particles of food together in a ball or bolus"
• a type of large pill used in veterinary medicine.
Origin:
mid 16th century (denoting a large pill): via late Latin from Greek bōlos ‘clod’.