WHat is the subject matter here? There are MANY different definitions of "LAVER" according to the subject. Please specify

Here are some definitions of Laver on the Web:

* A green vegetation, a bunch of which is held in the mouth by the liver on the arms of Liverpool.
digiserve.com/heraldry/pimb_l.htm

* noun [Jonathan Bowers] - A planar body of water in tetraspace or higher, which may have currents flowing in various directions. (laver = lake + river)
tetraspace.alkaline.org/glossary.htm

* the green algae, Ulva, dried and sold for food.
gmbis.marinebiodiversity.ca/BayOfFundy/glossI-L.html

* an edible purple seaweed.
home.olemiss.edu/~tjray/medieval/cooking.htm

* A basin or jug, usually of metal, used for washing.
www.mindmagi.demon.co.uk/Bacon/reference/glossary.htm

* The wash-place, usually a trough with running water situated in the cloister for the use of the monks before meals.
www.skell.org/explore/text/abbeytermsT.html

* "Wash", the pots or basins where the priest washed their hands and feet.
www.godonthe.net/dictionary/l.html

* [LAY-vuhr] This highly nutritious dried seaweed comes in tissue-thin sheets about 7 1/2 inches square. It has a fresh, tangy-sweet flavor and a dark purple color, which is why it`s also called purple laver. The Chinese name for this seaweed is jee choy, which means "purple vegetable". Before using, laver must be soaked in cold water. After an hour of soaking, it doubles in size. Laver is often used in soups. Strips of it can also be deep-fried and served as an appetizer.
www.mychefcoat.com/terms-l.html

* (Old Testament) large basin used by a priest in an ancient Jewish temple to perform ritual ablutions
* red laver: edible red seaweeds
* sea lettuce: seaweed with edible translucent crinkly green fronds
wordnet.princeton.edu/perl/webwn

* Nori (海苔) is a Japanese term used to refer to edible varieties of seaweed in the various species of the red alga Porphyra, including most notably P. yezoensis and P. tenera. A few other algae are used as well, including some cyanobacteria. Nori is also commonly used to refer to the food products created from these so-called "sea vegetables." Finished products are made by a shredding and rack-drying process that resembles papermaking. ...
en.wikipedia.org/wiki/Laver