TgJ Jer5:17 var. :כְרִיכָתָא דְאַת רְחִיץ"רָחֵיץ "לְאִשתֵיזָבָא בְהוֹן‏ : the fortified cities that you rely upon to be saved
See the entire entry for rḥṣ vb. to trust, to rely