חֵ֥ץ שוחט [שָׁח֛וּט] לְשׁוֹנָ֖ם מִרְמָ֣ה דִבֵּ֑ר בְּפִ֗יו שָׁל֤וֹם אֶת־רֵעֵ֙הוּ֙ יְדַבֵּ֔ר וּבְקִרְבּ֖וֹ יָשִׂ֥ים אָרְבּֽוֹ׃
Isang palasong hinasa ang kanilang dila; pandaraya ang sinasalita nito. Sa kanyang bibig ay kapayapaan ang sinasabi niya sa kanyang kapwa, ngunit sa kanyang kalooban ay naglalagay siya ng pagtambang laban sa kanya.
Rashi
Their tongue is a deadly arrow Heb. שחוט, drawn. Comp. (I Kings 10:16) “malleable gold” (שחוט). Also, (Hos. 5:2) “And the extent of their turning away (ושחטה),” (tirer in French), pulling. Another explanation is that it is actually an expression of slaughter (tranchant in French, cutting). In this manner Menahem classified it (Machbereth Menahem p. 172), and in this manner Jonathan rendered it: כּגיר די מחרף, like a sharpened arrow.
Rashi
but in his heart lit. in his midst. Jonathan renders: in his innards.