Thwack, n. A heavy blow with something flat or heavy; a thump.
With many a stiff thwack, many a bang, Hard crab tree and old iron
rang.
Hudibras.
Thwaite (?), n. (Zoöl.) The twaite.
Thwaite, n. [CF. Icel. þveit a piece of land, fr. þvta to cut. See
Thwite, and cf. Doit, and Twaite land cleared of woods.] Forest land
cleared, and converted to tillage; an assart. [Obs. or Prov. Eng.]
Thwaite occurs in composition as the last element in many names of
places in the north of England; as, in Rosthwaite, Stonethwaite.
Thwart (?), a. [OE. þwart, þwert, a. and adv., Icel. þvert, neut. of
þverr athwart, transverse, across; akin to AS. þweorh perverse,
transverse, cross, D. dwars, OHG. dwerah, twerh, G. zwerch, quer, Dan.
& Sw. tver athwart, transverse, Sw. tvär cross, unfriendly, Goth.
þwaírhs angry. Cf. Queer.] 1. Situated or placed across something else;
transverse; oblique.
Moved contrary with thwart obliquities.
Milton.