/boh"leuhs/ , n. , pl. boluses .
1. Pharm. , Vet. Med. a round mass of medicinal material, larger than an ordinary pill. Abbr.: bol.
2. a soft, roundish mass or lump, esp. of chewed food.
3. bole 2 .
[ 1595-1605; bolus clod of earth bôlos clod, lump; see BOLE 2 ]