THWACKS
Noun
thwacks
plural of thwack
Verb
thwacks
Third-person singular simple present indicative form of thwack
Source: Wiktionary
THWACK
Thwack, v. t. [imp. & p. p. Thwacked; p. pr. & vb. n. Thwacking.]
Etym: [Cf. OE. thakken to stroke, AS. , E. whack.]
1. To strike with something flat or heavy; to bang, or thrash: to
thump. "A distant thwacking sound." W. Irving.
2. To fill to overflow. [Obs.] Stanyhurst.
Thwack, n.
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition