surface hole
71swallow hole — noun a depression in the ground communicating with a subterranean passage (especially in limestone) and formed by solution or by collapse of a cavern roof • Syn: ↑sinkhole, ↑sink • Hypernyms: ↑natural depression, ↑depression * * * noun see… …
72Octopus Hole — is a designated conservation area[1] on Washington s Hood Canal. It is located right off Highway 101 just over three miles from Hoodsport. Like the close by Sund Rock area, Octopus Hole is very popular with Scuba divers who enjoy diving the wall… …
73Trapped null surface — A trapped null surface is a set of points defined in the context of general relativity as a closed surface on which outward pointing light rays are actually converging (moving inwards).Trapped null surfaces are used in the definition of the… …
74Morey Hole — Location Plymouth, Massachusetts Coordinates 41°52′05″N 70°33′30″W …
75water hole — 1. a depression in the surface of the ground, containing water. 2. a source of drinking water, as a spring or well in the desert. 3. a pond; pool. 4. a cavity containing water in the dry bed of a river. 5. a hole in the frozen surface of a lake,… …
76countersunk hole — noun A hole which is drilled into a surface, so that when a screw is inserted, the screw head is level with the surface …
77air hole — noun a) a hole in any surface that allows air or other gases to pass, especially an opening in the surface of a frozen lake etc b) an air pocket …
78blow-hole — n 1.) a hole in the surface of ice where water animals such as ↑seals come to breathe 2.) a hole in the top of the head of a ↑whale, ↑dolphin etc through which they breathe …
79water hole — n. 1. a dip or hole in the surface of the ground, in which water collects; pond or pool 2. a hole in the ice on a body of water …
80water hole — noun Date: circa 1653 1. a natural hole or hollow containing water 2. a hole in a surface of ice …
