DEVIL n.
us olens). [Eng.] (b) A large, predacious, hemipterous insect (Prionotus cristatus); the wheel bug. [U.S.] -- Devil's darning-needle. (Zoöl.) See under Darn, v. t. -- Devil's fingers, Devil's hand (Zoöl.), the common British starfish (Asterias rubens); -- also applied to a sponge with stout branches. [Prov. Eng., Iris…
DIFFERENTIAL a.
difference of their effect upon the needle. -- Differential gearing, a train of toothed wheels, usually an epicyclic train, so arranged as to constitute a differential motion. -- Differential motion, a mechanism in which a simple differential combination produces such a change of motion or force as would, with ordina…