The same as tsela'; Tsela, a place in Palestine -- Zelah.
see HEBREW tsela'
H6762. Tsela
צֵלַע proper name, of a location in Benjamin Joshua 18:28, A ᵐ5L Σελα [(ε) λαφ]; burial-place of Saul 2 Samuel 21:14 (צֵלָֹע), ἐν τῇ πλευρᾷ; possinly = Tel Amarna Zilu, so ZimZA vi. 258 JastrJBL xi (1892), 105 (Wkl, however, thinks of סלע).