15-letter words starting with b
- butterfly wedge — a wooden fastening in the form of a double dovetail for joining two boards at their edges.
- button mangrove — a tropical tree, Conocarpus erectus, having small, reddish, conelike fruits and bark used in tanning.
- button mushroom — Button mushrooms are small mushrooms used in cooking.
- buttress thread — a screw thread having one flank that is vertical while the other is inclined, and a flat top and bottom: used in machine tools and designed to withstand heavy thrust in one direction
- buy-back option — the option for a company to buy some or all of its shares from an investor, who acquired them by putting venture capital into the company when it was formed
- buys-ballot law — the law stating that if one stands with one's back to the wind, in the Northern Hemisphere the atmospheric pressure will be lower on one's left and in the Southern Hemisphere it will be lower on one's right: descriptive of the relationship of horizontal winds to atmospheric pressure.
- by a long chalk — You can use by a long chalk to add emphasis to something you are saying.
- by all accounts — according to everyone
- byzantine chant — liturgical plainsong identified with the Eastern Orthodox Church and dating from the Byzantine Empire.