3. A series of connected pipes in rows or layers, as in a steam heating apparatus.
Induction coil. (Elec.) See under Induction. -- Ruhmkorff's coil (Elec.), an induction coil, sometimes so called from Ruhmkorff (&?;), a prominent manufacturer of the apparatus.
Coil, n. [Of Celtic origin; cf. Gael. goil fume, rage.] A noise, tumult, bustle, or confusion. [Obs.] Shak.
Coi"lon (?), n. [F. See Cullion.] A testicle. [Obs.] Chaucer.
Coin (koin), n. [F. coin, formerly also coing, wedge, stamp, corner, fr. L. cuneus wedge; prob. akin to E. cone, hone. See Hone, n., and cf. Coigne, Quoin, Cuneiform.] 1. A quoin; a corner or external angle; a wedge. See Coigne, and Quoin.
2. A piece of metal on which certain characters are stamped by government authority, making it legally current as money; -- much used in a collective sense.
It is alleged that it [a subsidy] exceeded all the current coin of the realm.
Hallam.