[tet.ter] n [ME teter, fr. OE; akin to OHG zittaroh tetter, Skt dadru leprosy, drnati he tears--more at tear] (bef. 12c): any of various vesicular skin diseases (as ringworm, eczema, and herpes)
TETTER
Meaning of TETTER in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012