H6476. patsach
מָּצַח verb cause to break or burst forth, break forth with (compare Arabic break, crush; Ethiopic shatter; Syriac is be joyous, hilarious); —
Qal Perfect3plural רִנָּה מָּֽצְחוּ [Isa 14:7] they have broken forth with joyous shout; Imperfect רִנָּה יִפְצְחוּ [55:12] (of mountains); Imperative feminine singular רִנָּה מִּצְחִי [54:1] (of Zion); masculine plural ר ׳מִּצְחוּ [44:23]; [49:13] Qr (> Kt יפצחו; of mountains); absolute מִּצְחוּ [52:9]; [Psa 98:4] (both + רַנְּנוּ).
Pi`el break bones in pieces: Perfect3plural מִּצֵּ֑חוּ [Micah 3:3].