TgJ Jer52:21 :וְסוּמכֵיה אַרבַע אַצבְעָן חֲלִיל‏ : its thickness four fingers hollow
See the entire entry for ḥlīl adj. hollow

TgJ Jer52:21 :וְסוּמכֵיה אַרבַע אַצבְעָן‏ :
See the entire entry for *smoḵ, sumkā n.m. thickness