THRYFALLOW
Thry"fal`low, v. t. Etym: [Perhaps fr. thrice + fallow. Cf.
Trifallow.]

Defn: To plow for the third time in summer; to trifallow. [R.]
[Written also thrifallow.] Tusser.

THUD
Thud, n. Etym: [Cf. AS. a whirlwind, violent wind, or E. thump.]

Defn: A dull sound without resonance, like that produced by striking with, or striking against, some comparatively soft substance; also, the stroke or blow producing such sound; as, the thrud of a cannon ball striking the earth. At every new thud of the blast, a sob arose. Jeffrey. At intervals there came some tremendous thud on the side of the steamer. C. Mackay.

THUG
Thug, n. Etym: [Hind. thag a deceiver, robber.]

Defn: One of an association of robbers and murderers in India who practiced murder by stealthy approaches, and from religious motives. They have been nearly exterminated by the British government.

THUGGEE
Thug*gee", n. Etym: [Hind. .]

Defn: The practice of secret or stealthy murder by Thugs. "One of the suppressors of Thuggee." J. D. Hooker.

THUGGERY; THUGGISM
Thug"ger*y, Thug"gism, n.

Defn: Thuggee.