Careful Words

frog (n.)

frog (v.)

Eye of newt and toe of frog,

Wool of bat and tongue of dog.

William Shakespeare (1564-1616): Macbeth. Act iv. Sc. 1.

  Thus use your frog: put your hook—I mean the arming wire—through his mouth and out at his gills, and then with a fine needle and silk sew the upper part of his leg with only one stitch to the arming wire of your hook, or tie the frog's leg above the upper joint to the armed wire; and in so doing use him as though you loved him.

Izaak Walton (1593-1683): The Complete Angler. Part i. Chap. 8.