From daka'; crushed (literally powder, or figuratively, contrite) -- contrite, destruction.
see HEBREW daka'
H1793. dakka
' I. דַּכָּא adjective contrite (crushed) — דַּכָּא Isaiah 57:15; דַּכְּאֵי Psalm 34:19 — contrite Isaiah 57:15 ("" שְׁפַלרֿוּחַ); ׳ד רוּחַ Psalm 34:19 ("" נִשְׁבְּרֵילֵֿב).
II. דַּכָּא noun [masculine] dust (as pulverized), עַדדַּֿכָּא אֱנוֺשׁ תָּשֵׁב Psalm 90:3 (on form compare BaNB 143).