Jastrow: סַרְטָן

סַרְטָן m. (סָרַט) [scratcher, scraper,] crab; Cancer, the fourth sign of the Zodiac, corresp. to the Hebrew month of Tammuz. Pesik. R. s. 20 ואחריו מה אתה בורא ס׳ and after that, what wilt thou create? Cancer; למפני … כס׳ because man (in childhood) grabs out of holes and cracks like a crab; Tanḥ. Haăz. 1 תחלתו חלש כס׳ at first man is weak like a crab. Pesik. R. s. 27-28 הס׳ הזה … המים (some ed. הסַרְטוֹן) the crab lives only on what it finds in the water. Yalk. Ex. 418.