What is the meaning of Kyrie?

A short prayer or petition including the phrase kyrie eleison, meaning “Lord, have mercy”.

A setting of the traditional kyrie text to music for a Mass.

kyrie, instance or practice of using the phrase Kyrie eleison in liturgy or lyrics

kyrie, a prayer or musical piece set to the phrase

kyrie (prayer)

Clipping of kyrie eleison.

Source: wiktionary.org