from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Long, thin, and tapering; whip-shaped: flagelliform appendages.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. shaped like a whip
from the GNU version of the Collaborative International Dictionary of English
- adj. Shaped like a whiplash; long, slender, round, flexible, and (comming) tapering.
from The Century Dictionary and Cyclopedia
- Long, thin, and flexible, like the lash of a whip.
- In botany, runner-like.
The Rays have been divided into several generic groups, and the one of which a drawing (_Aëtobates narinari_ ) is given, has very marked characteristics in its produced snout, pointed and winged-like pectoral fins, and exceedingly long, flagelliform tail.