from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A direct, straight course.
- intransitive v. To move swiftly in a direct, straight course.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A very direct or quick path or trip.
- n. A dynamite fuse made with a small quantity of dynamite powder along its length, so that the spark travels quickly and at a specific known rate.
- v. To travel in a straight course, ignoring established paths of travel.
from the GNU version of the Collaborative International Dictionary of English
- The shortest line from one place to another, like that of a bee to its hive when loaded with honey; an air line.
from The Century Dictionary and Cyclopedia
- n. The most direct or straight way from one point to another, as that of bees in returning loaded with honey to their hives.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the most direct route
From the belief that a bee returns to its hive in a straight course.(American Heritage® Dictionary of the English Language, Fourth Edition)
From bee + line, via the belief that a bee returns to its hive in a straight course. (Wiktionary)