This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. See tegmen.

n. A part of the midbrain consisting of white fibers running lengthwise through gray matter.

n. The ventral portion of the midbrain, divided from the tectum by the cerebral aqueduct and the periaqueductal grey

n. Containing the following nuclei: red nucleus, substantia nigra, ventral tegmental area

n. A covering; -- applied especially to the bundles of longitudinal fibers in the upper part of the crura of the cerebrum.

n. The outer porous layer of the shell of polyplacophorous mollusks or chitons, which covers the inner porcelanous articulamentum.

n. In botany, the scaly coat which covers the leaf-buds of deciduous trees; also, one of the scales of such covering.

n. In anatomy, the larger and deeper or upper of two parts into which each crus cerebri is divisible, separated from the crusta by the substantia nigra.

"The principal gray masses of the tegmentum are the red nucleus and the interpeduncular ganglion; of its fibers the chief longitudinal tracts are the superior peduncle, the medial longitudinal fasciculus, and the lemniscus."

tegmentum tympani    nucleus of the tegmentum   

tegmental    tectum   

covering