He sprayed his head
Kill him by cutting off his head. Remove his head from above (splash the head with a knife, chop it off with a swing).
("The commandment of the one who kills - they should cut off his head with a sword, in the manner of the king. Rabbi Yehuda Omer says: He who is cut off is cut off" - Sanhedrin Nob 2b, and so: "After he had calmed down from his laughter, he said, Did you not see that I sprinkled his head and threw him at my feet" - Agnon/ Ad Hena, 112)
Translation
Expression (Hebrew)
הִתִּיז אֶת רֹאשׁוֹ
Definition (Hebrew)
הָרַג אוֹתוֹ בְּאֶמְצָעוּת עֲרִיפַת רֹאשׁוֹ. הֵסִיר אֶת רֹאשׁוֹ מֵעָלָיו (הִתִּיז מַשְׁמָע כָּרֵת, קָצַץ בִּתְנוּפָה).
("מִצְוַת הַנֶּהְרָגִין- הָיוּ מַתִּיזִין אֶת רֹאשׁוֹ בְּסַיִף כְּדֶרֶךְ שֶׁהַמַּלְכוּת עוֹשָׂה. רַבִּי יְהוּדָה אוֹמֵר: נִוּוּל הוּא לוֹ"- סַנְהֶדְרִין נֹב ע"ב, וְכֵן:"לְאַחַר שֶׁנִּתְפָּרֵק מִצְּחוֹקוֹ אָמַר, לֹא רָאִיתָ שֶׁהִתַּזְתִּי אֶת רֹאשׁוֹ וְהִשְׁלַכְתִּיו לְרַגְלַי"- עַגְנוֹן/ עַד הֵנָּה, 112)