TgJ 2Sam18:9 :וְעַלַת כוֹדַנתָא תְחוֹת/"לִתחוֹת" סוֹכָא דְבוּטמָא רַבְתָא‏ : the mule entered in beneath the branches of a large terebinth
See the entire entry for ltḥt prep. beneath