Versicle

Webster's Dictionary

(n.) A little verse; especially, a short verse or text said or sung in public worship by the priest or minister, and followed by a response from the people.

Cyclopedia of Biblical, Theological and Ecclesiastical Literature

is a brief and terse exclamation, commonly consisting of a single sentence, with a corresponding response which is used in various services of the Church, especially in the Church of England; also a short antiphon sung towards the altar; also the prayer or acclamation at the beginning of the Hours.