crushing, dashing, crashing, pounding of waves

Root √דכה: דָּכָה vb Qal and he is crushed and he croucheth dub. or Niph be crushed broken be contrite . ; Pi crush down . . id. (only ψ);

דֳּכִי n.[m.] crushing crashing dashing ψ 93:3 (). of ocean (waves).