noun Date: circa 1929 the Slavic language used in the liturgical and Biblical translations of Cyril and Methodius as attested in manuscripts of the 10th and 11th centuries
OLD CHURCH SLAVIC
Meaning of OLD CHURCH SLAVIC in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012