n. [ A corrupt. of chigre. ] 1. (Zool.) A species of flea (Tunga penetrans, or Sarcopsylla penetrans, or Pulex penetrans), which burrows beneath the skin; called also jigger flea. See Chigoe. [ 1913 Webster ]

2. (Zool.) Any one of several species of small red mites (esp. Tetranychus irritans and Tetranychus Americanus) of the family Trombiculidae, which, in the larval or leptus stage, burrow beneath the skin of man and various animals, causing great annoyance. Also called chigger. [ Southern U. S. ] [ Webster 1913 Suppl. +PJC ]

n. [ See Jig, n. & v. ] 1. One who, or that which, jigs; specifically, a miner who sorts or cleans ore by the process of jigging; also, the sieve used in jigging. [ 1913 Webster ]

2. (Pottery) (a) A horizontal table carrying a revolving mold, on which earthen vessels are shaped by rapid motion; a potter's wheel. (b) A template or tool by which vessels are shaped on a potter's wheel. [ 1913 Webster ]

3. (Naut.) (a) A light tackle, consisting of a double and single block and the fall, used for various purposes, as to increase the purchase on a topsail sheet in hauling it home; the watch tackle. Totten. (b) A small fishing vessel, rigged like a yawl. [ New Eng. ] (c) A supplementary sail. See Dandy, n., 2 (b). [ 1913 Webster ]

4. A pendulum rolling machine for slicking or graining leather; same as Jack, 4 (i). [ 1913 Webster ]

5. A small glass or measuring vessel holding 11/2 ounces (45 ml), used mostly for measuring liquor or drinking whiskey; also, the quantity of liquid held in a jigger. [ PJC ]

6. A thingamajig. [ Colloq. ] [ PJC ]

Jigger mast. (Naut.) (a) The after mast of a four-masted vessel. (b) The small mast set at the stern of a yawl-rigged boat. [ 1913 Webster ]

v. t. [ Cf. Jiggle. ] To move, send, or drive with a jerk; to jerk; also, to drive or send over with a jerk, as a golf ball.

He could jigger the ball o'er a steeple tall as most men would jigger a cop. Harper's Mag. [ Webster 1913 Suppl. ]

n. A verbal misrepresentation intended to take advantage of a person in some way.
Syn. -- trickery, hocus-pocus, slickness, hanky panky, skulduggery, skullduggery. [ WordNet 1.5 ]