Definition of "plump down" []

• To sit down heavily onto a seat. (verb)

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• "But, alas! her troubles were not over; for as the game of hockey swept past her, a dexterous blow from a mischievous boy-player sent her chair spinning away like a top, twirling round as it went, and the poor lady sat plump down on the ice, where I left her, ruefully gazing at her vanishing support."