prunella noun² & adjective. [prʊ'nɛlǝ] M17.
[Origin uncertain: perh. from French prunelle, of unkn. origin.]
A. noun. A strong silk or worsted fabric formerly used for the gowns of graduates, members of the clergy, and barristers, and later for the uppers of women's shoes. M17.
leather and prunella arch. a matter of complete indifference.
b. attrib. or as adjective. Made or consisting of prunella. E18.

[TahlilGaran] English Dictionary ▲

prunella noun³.M17-L19.
[mod. Latin, in medieval Latin brunella an infectious disease with brown coating of the tongue, dim. of brunus brown: see -ELLA.]
Medicine. Orig., typhus, esp. as prevalent among the imperial troops in Germany in 1547 and 1566. Later, any of various conditions esp. of the throat, as quinsy.

Comb.:
prunella salt [mod. Latin lapis or sal prunellae] Pharmacology a preparation of saltpetre.

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[TahlilGaran] English Dictionary ▲

prunella noun¹. [prʊ'nɛlǝ] L16.
[mod. Latin (see below), app. used because self-heal was a reputed cure for the disease PRUNELLA noun³.]
Any of several small labiate plants constituting the genus Prunella; esp. self-heal, P. vulgaris.

[TahlilGaran] English Dictionary ▲