To smite a person in the groin/ to smite a person under the fifth rib
By metaphor: to strike with force. To attack and prevail over him (חֻמָּשׁ meaning the soft part between the ribs and the thigh).
("And they were afraid of the wall, and Abner struck him behind the spear at the fifth hour, and the spear went out from behind him, and he fell there and died under it" - 2 Samuel 2:23)
Translation
Expression (Hebrew)
הִכָּה אֶל הַחֹמֶשׁ
Definition (Hebrew)
בְּהַשְׁאָלָה: הַכֵּה בְּעָצְמָה. תָּקַף וְגָבַר עָלָיו (חֻמָּשׁ מַשְׁמָע הַחֵלֶק הָרַךְ בֵּין הַצְּלָעוֹת לַיָּרֵךְ).
("וַיְמָאֵן לָסוּר וַיַּכֵּהוּ אַבְנֵר בְּאַחֲרֵי הַחֲנִית אֶל הַחֹמֶשׁ וַתֵּצֵא הַחֲנִית מֵאַחֲרָיו וַיִּפָּל שָׁם וַיָּמָת תַּחְתָּיו"- שְׁמוּאֵל ב ב כג)