[f. THWACK v. + -ING1.] The action of the verb THWACK in various senses. Also attrib.: thwacking-frame, a stand on which pantiles are beaten into shape; thwacking-horse, -stool, a bench on which the thwacking-frame is placed; thwacking-knife, a knife for trimming the edges of pantiles.
1736. Ainsworth, Lat. Dict., I. A thwacking, verberatio, fustuarium, fustigatio.
1760. Mair, Tyros Dict. (1820), 372. Stipatio, a cramming or thwacking of things together.
1820. W. Irving, Sketch Bk., II. 107. We heard a distant thwacking sound, the rolling pin, struck upon the dresser by the cook.
1867. Thwacking frame [see THWACKER 1].
1895. Zangwill, Master, III. ix. The thwacking of the dancers feet in the barn.