a small rounded mass of a substance, especially of chewed food at the moment of swallowing 块,团(尤指咀嚼后准备下咽的食物) ■a type of large pill used in veterinary medicine (兽医用的)大丸药 ■(Medicine)a single dose of drug or other medicinal preparation given all at once (医)一剂药
语源
mid 16th cent. (denoting a large pill of medicine): via late Latin from Greek bōlos 'clod'