chuck hole
Webster's Dictionary (GCIDE)
Chuck \Chuck\, n.
1.A slight blow or pat under the chin. [1913 Webster]
2.A short throw; a toss. [1913 Webster]
3.(Mach.) A contrivance or machine fixed to the mandrel of a lathe, for holding a tool or the material to be operated upon. [1913 Webster]
Chuck farthing, a play in which a farthing is pitched into a hole; pitch farthing.
Chuck hole, a deep hole in a wagon rut.
Elliptic chuck, a chuck having a slider and an eccentric circle, which, as the work turns round, give it a sliding motion across the center which generates an ellipse. --Knight. [1913 Webster]