\Te"beth\, n. [Heb.] The tenth month of the Jewish ecclesiastical year, answering to a part of December with a part of January. --Esther ii. 16.
(Esther 2:16), a word probably of Persian origin, denoting the cold time of the year; used by the later Jews as denoting the tenth month of the year. Assyrian tebituv, "rain."
Webster's 1913 Dictionary