יַתּוּשׁ m. (fr. תָּשַׁשׁ?) 1) mosquito or gnat. Gitt. 56ᵇ בא י׳ ונכנס וכ׳ a mosquito came and entered his (Titus’) nose; Gen. R. s. 10; Lev. R. s. 22. Sabb. 77ᵇ י׳ לנחש the mosquito (an application of a pulp made of mosquitos) is a remedy for a serpent’s bite. Ib. אימת י׳ על הפיל the fear which the elephant has of the yattush, v. אֵימָה. Snh. 38ᵃ; Lev. R. s. 14, beg. י׳ קדמך וכ׳ the y. has been created before thee (man); a. e.—Pl. יַתּוּשִׁים, יַתּוּשִׁין. Gen. R. s. 5 (ref. to Gen. III, 17) דברים ארורים כגון י׳ ופרעושין וכ׳ cursed things like gnats, fleas and flies; a. fr.—Tosef. Sabb. XII (XIII), 4 זבובין וי׳; Y. ib. XIV, beg. 14ᵇ ותושין (corr. acc.), v. חָגָז. —2) a bug (on a fruit). Sifra Sh’mini Par. 10, ch. XII; Ḥull. 67ᵇ; a. e., v. כָּלִיס.