| Groundhog Day |
February 2, on which tradition asserts that a certain groundhog comes out of its hole, and that if it sees its shadow, six more weeks of winter weather will follow. |
| groundless |
not having a logical foundation; unsubstantiated. |
| groundling |
an animal or plant that moves or lives close to the ground. [2 definitions] |
| ground loop |
a sharp, unexpected, and often uncontrolled turn of an aircraft moving on the ground, as during landing. |
| groundnut |
any of several plants having edible underground nuts or tubers, such as the peanut. |
| ground plan |
a floor plan of a building. [2 definitions] |
| ground rule |
(usu. pl.) basic rules governing the behavior in a given situation, esp. as concerns the playing of a game on a particular field, course, or court. |
| grounds |
tiny pieces of solid matter, such as coffee, that settle at the bottom of a liquid. [2 definitions] |
| groundsel |
any of various weeds that bear small yellow flowers. |
| groundsill |
the lowest horizontal timber in the framework of a building. |
| groundskeeper |
a person responsible for the maintenance of the grounds of an estate, park, sports field, or the like. |
| ground squirrel |
any of various burrowing rodents, such as chipmunks, that differ from true squirrels in having cheek pouches and shorter fur. |
| groundswell |
a wide, slow-moving ocean swell, caused by a distant earthquake or storm. [2 definitions] |
| ground troops |
soldiers sent to carry out combat or security duties on land, carrying personal weapons. |
| ground water |
the water beneath the earth's surface that supplies springs and wells. |
| ground wave |
a radio wave traveling on or near the earth's surface and affected by its curvature, atmosphere, and the like. |
| ground wire |
a wire acting as a conductor of an electric current to the ground. |
| groundwork |
the preparations or basis for an undertaking. |
| ground zero |
the land or water surface directly above or below the point at which a nuclear bomb explodes. |
| group |
a collection of things, ideas, or people that are assembled, connected, or related; body; cluster; set. [5 definitions] |
| groupable |
combined form of group. |