Frŏg, n.
n. [A-S. frogga, frocga, frocca, frox, frosc, N. H. Ger. frosch, M. H. Ger. vrosch, D. vorsch. Dan. fröe, Sw. frö.]
Sense 1. (Zoöl.) An amphibious animal of the genus Rana, with four feet, a naked body, and without a tail. It is remarkable for swimming rapidly, and for taking long leaps on land.
Sense 2. (Far.) An elastic, horny substance growing in the middle of the sole of a horse’s foot, at some distance from the toe, dividing into two branches, and running toward the heel in the form of a fork.
Sense 3. An oblong cloak-button, swelled in the middle, covered with silk, and having tufts at the end.
Sense 4. (Railways.) A triangular support or crossing plate for the wheels where one track branches off from another, or crosses it at an angle greater or less than a right angle. [U. S.]
Cross-frog, a plate of iron having fastened to it a piece of rail formed as if bent at right angles, placed at each of the four angles formed by one railroad track crossing another at right angles.
