Jubilee (biblical) it was thought that the English term "Jubilee" derives from the Hebrew term "yobel" (via Latin ""), which in turn derives from "yobhel", meaning "ram"; the Jubilee year was announced by a blast on a shofar, an instrument made from a ram's horn, during that year's Yom Kippur. An alternative etymology notes that the Latin verb "iūbilō", "shout for joy," predates the Vulgate, and proposes that instead the Latin "jubilo" (meaning "shout"), as well as Middle Irish "ilach" (victory cry), New English "yowl", and Ancient Greek "iuzo" (ἰύζω: shout), derived from the Proto-Indo-European root "*yu-" (shout for joy). In this
Reedless wind instrument a clarinet functions mostly as a wind instrument (aerophone), some percentage of the sound production may be attributed to the beating of the reed, which, although not considered an idiophone, does contribute, to a slight degree, non-aerophonic components to the initial sound production. In reedless wind instruments the solid matter from which the instrument's body is made takes on the role only of containing the fluid (air) that makes the sound. Whereas wind instruments use compressible fluid (air), a new category of instruments, called hydraulophones, use less-compressible fluid (water). Hydraulophones in their most pure form, are reedless. These are called