A sterile stratum that lies above the stratum being investigated
The rock and subsoil that lies above a mineral deposit such as a coal seam.
To overload or overtax.
A tangled twisted mass.
Any large type of seaweed, especially a species of Laminaria.
An argument, conflict, dispute, or fight.
A complicated or confused state or condition.
A paired helical fragment of tau protein found in a nerve cell and associated with Alzheimer's disease.
Any long hanging thing, even a lanky person.
A region of the projection of a knot such that the knot crosses its perimeter exactly four times.
An instrument consisting essentially of an iron bar to which are attached swabs, or bundles of frayed rope, or other similar substances, used to capture starfishes, sea urchins, and other similar creatures living at the bottom of the sea.
A form of art which consists of sections filled with repetitive patterns.
To mix together or intertwine.
To enter into an argument, conflict, dispute, or fight.
To catch and hold.
To become mixed together or intertwined.