trombone

[Ital., augmentative of tromba = a trumpet (q. v.).] 1. Music : (1) A large, deep, and loud-toned instrument of the trumpet kind, the name being an augmentative of tromba . It consists of two tubes, so constructed that one may slide in and out of the other, and thus form one tube that can be lengthened at will and made of varying pitch. There are three kinds of trombones, called after their compa the alto, tenor, and ba trombones. Soprano trombones have also been made, but they are rarely used. The alto trombone has a compa of more than two octaves and a half, and is also known as the trombone in E flat. It is written in the c clef, third line. The tenor trombone is also known as the trombone in B fiat. It is written on the cclef, fourth line. The ba trombone is the lowest of all in its range of notes, and is known as the E flat. It is written on the F clef; is an octave lower than the alto, and a fifth lower than the tenor. Some of these in- Trombone. struments are fitted with pistons, whence they are called valve-trombones. (2) A powerful reed stop in the organ, of eight feet or sixteen feet scale on the manuals and sixteen feet or thirty-two feet on the pedals. 2. Ordn.: A form of blunderbu for boat-service. trăm'-mel, s. [Etym. doubtful.] Metall.: A form of buddle or machine for separating the richer portions of slimes from the worth le . The American Dictionary and Cyclopedia IMG:content-1487.png:[blocks in formation] 1. To collect in crowds; to a emble or gather in numbers. "Nor, while they pick them up with busy bill, The little trooping birds unwisely scares." Thomson: Spring, 136. 2. To march in a body or company. "Nor do I as an enemy to peace, Troop in the throngs of military men." Shakesp.: Henry IV ., Pt . II ., iv. 1. trō-na, s . [An Arabic name.] Mineral.: A monoclinic mineral, mostly occurring *3. To march in haste. (Generally followed by fibrous or ina ive. Hardne , 2.5-3; specific gravity, 2'11; luster vitreous; color, grayish to white; translucent; taste, alkaline. Composition: Carbonic acid, 40-2; soda, 37.8; water, 22.0=100, which yields the formula, 2NaO, 3CO2+4HO. First found and used by the Arabs at Suckenna, Fezzan, Africa. *tron-age (age as Ig), s . [English tron (e) (3); -age.] A toll or duty paid for weighing wool; the act of weighing wool. *tron-a-tõr, s. [Low Lat., from O. Fr. trone =a steelyard.] An officer in London whose duty was to weigh wool. *tronch-oun, s. [TRUNCHEON.] off. ) "At whose approach ghosts Troop home to churchyards. Shakesp.: Midsummer Night's Dream, iii. 2. *4. To a ociate. "A snowy dove trooping with crows." Shakesp.: Romeo and Juliet, i. 5.