from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of various predatory aquatic beetles of the family Dytiscidae.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any beetle of the family Dytiscidae.
from the GNU version of the Collaborative International Dictionary of English
- adj. any beetle of the family Dytiscidæ, which habitually lives under water; -- called also water tiger.
from The Century Dictionary and Cyclopedia
- n. A popular name for various aquatic beetles of the family Dytiscidæ. They swim freely in the water, and may often be seen diving rapidly to the bottom, whence their name. See cut under Dytiscus.
Sorry, no etymologies found.