from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A round mass: "A dense bolus of trapped dolphins fills the frame” ( Kenneth Browser).
- n. A single, relatively large quantity of a substance, such as a dose of a drug, intended for therapeutic use and taken orally.
- n. A concentrated mass of a substance administered intravenously for diagnostic or therapeutic purposes.
- n. A soft mass of chewed food within the mouth or alimentary canal.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A round mass of something, especially of chewed food in the mouth or alimentary canal.
- n. A single, large dose of a drug, especially one in that form.
from the GNU version of the Collaborative International Dictionary of English
- n. A rounded mass of anything, esp. a large pill.
from The Century Dictionary and Cyclopedia
- n. A soft round mass of anything medicinal, larger than an ordinary pill, to be swallowed at once.
- n. Figuratively, anything disagreeable, as an unpalatable doctrine or argument, that has to be accepted or tolerated.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a small round soft mass (as of chewed food)
- n. a large pill; used especially in veterinary medicine
Medieval Latin bōlus, from Greek bōlos, lump of earth.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Late Latin bōlus ("clod of earth, lump"), from Ancient Greek βωλος (bōlos, "clod, lump"). (Wiktionary)