The Collaborative International Dictionary of English v.0.48:

Conciliable \Con*cil"i*a*ble\, n. [L. conciliabulum, fr.
   concitium assembly: cf. F. conciliabule. See Council.]
   A small or private assembly, especially of an ecclesiastical
   nature. [Obs.] --Bacon.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Conciliable \Con*cil"i*a*ble\, a. [Cf. F. conciliable.]
   Capable of being conciliated or reconciled. --Milton.
   [1913 Webster]

WordNet (r) 3.0 (2006):

conciliable
    adj 1: capable of being pacified [syn: appeasable,
           conciliable]