וְאַחֲרָ֤יו הָיָה֙ שַׁמְגַּ֣ר בֶּן־עֲנָ֔ת וַיַּ֤ךְ אֶת־פְּלִשְׁתִּים֙ שֵֽׁשׁ־מֵא֣וֹת אִ֔ישׁ בְּמַלְמַ֖ד הַבָּקָ֑ר וַיֹּ֥שַׁע גַּם־ה֖וּא אֶת־יִשְׂרָאֵֽל׃ (ס)
And after him was Shamgar the son of Anath, who smote of the Philistines six hundred men with an ox-goad; and he also saved Israel.
Metzudat David on Judges
In the year that Ehud died, Shmagar became a judge and he died in that year
Metzudat Zion on Judges
Ox Goad: this is the stick that at the top of it has the eye of a needle stuck in it and its called a spur. With it you teach and scare the cattle to plow