any of numerous aquatic beetles of the family Gyrinidae, commonly seen in groups circling about rapidly on the surface of the water.
[ 1850-55 ]
any of numerous aquatic beetles of the family Gyrinidae, commonly seen in groups circling about rapidly on the surface of the water.
[ 1850-55 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012