Jubilate /(?)/

Ju·bi·la·te

Jubilate

n.
  1. The third Sunday after Easter; -- so called because the introit is the 66th Psalm, which, in the Latin version, begins with the words, “Jubilate Deo.”
  2. A name of the 100th Psalm; -- so called from its opening word in the Latin version.

Jubilate

v. i.
  1. To exult; to rejoice. [R.]