Webster’s Revised Unabridged Dictionary · 1913
Idioticon
Id′i·ot′i·con (·ŏt′ĭ·kŏn), n. [NL., fr. Gr. ἰδιωτικός belonging to a private man, private. See Idiot.] A dictionary of a peculiar dialect, or of the words and phrases peculiar to one part of a country; a glossary.