Webster's Revised Unabridged Dictionary · 1913

June

June , noun

[Latin Junius: compare French Juin. So called either from Junius, the name of a Roman gens, or from Juno, the goddess.]

The sixth month of the year, containing thirty days.
And what is so rare as a day in June? Then, if ever, come perfect days. — Lowell
Collocations (2)
June beetle or June bug (Zoology) , any one of several species of large brown beetles of the genus Lachnosterna and related genera; -- so called because they begin to fly, in the northern United States, about the first of June. The larva of the June beetles live under ground, and feed upon the roots of grasses and other plants. Called also May bug or May beetle.
June grass (Botany) , a New England name for Kentucky blue grass. See Blue glass, and Illustration in Appendix.