PTS Pali-English dictionary - The Pali Text Society's Pali-English dictionary
ambala
Ambala,at J.II,246 (°koṭṭhaka-āsana-sālā) for ambara1 (?) or for ambaka2 (?),or should we read kambala°?. (Page 74)
Buddhist Dictionary of Pali Proper Names by G P Malalasekera
ambala
Ambala:Probably the name of a tower in the Jetavana monastery. The Sunakha Jātaka was preached there about a dog who lived in its resting-hall (J.ii.246).