The Collaborative International Dictionary
Thack \Thack\, Thacker \Thack"er\ See Thatch, Thatcher. [Obs. or Prov. Eng. & Scot.]
Wiktionary
Etymology 1 vb. (context transitive English) To strike; thump; thwack. Etymology 2
n. A stroke; a thwack. Etymology 3
n. the weatherproof outer layer of a roof, often thatch specifically vb. To cover a roof with thack.
Usage examples of "thack".
They sent their top epidemiologist, Joseph Hillman, to head up the investigation, and Public Health sent Eric Thacker.
Kunda Khadar dam site the day Inspector Thacker suggested that perhaps next week they might meet at the International Coffee House on Connaught Circus, his favorite.
Earth-mover robots started clearing the Kunda Khadar dam site the day Inspector Thacker suggested that perhaps next week they might meet at the International Coffee House on Connaught Circus, his favorite.
Among the first pioneers of the later modern ink industry abroad, may be mentioned the names of Stephens, Arnold, Blackwood, Ribaucourt, Stark, Lewis, Runge, Leonhardi, Gafford, Bottger, Lipowitz, Geissler, Jahn, Van Moos, Ure, Schmidt, Haenle, Elsner, Bossin, Kindt, Trialle, Morrell, Cochrane, Antoine, Faber, Waterlous, Tarling, Hyde, Thacker, Mordan, Featherstone, Maurin, Triest and Draper.