n. A set or sequence of five, as in piquet.n. In music, same as fifth, 2.n. In organ-building, a stop giving tones a fifth above the normal pitch of the digitals used.n. The smallest of the three varieties of viola da bracchio. See viol.n. The E string or chanterelle of a violin: probably so called from the highest string of the lute.n. In fencing, the fifth of the eight parries in sword-play. It is taught in the schools, but rarely used in practice.n. A prefix of the names of musical instruments and of organ-stops, denoting a variety whose pitch is a fifth above or below that of the usual variety.n. An abbreviation of quintet, 2.