The Collaborative International Dictionary of English v.0.48:

Unliquidated \Un*liq"ui*da`ted\, a.
   Not liquidated; not exactly ascertained; not adjusted or
   settled.
   [1913 Webster]

   Unliquidated damages (Law), penalties or damages not
      ascertained in money. --Burrill.
      [1913 Webster]

Bouvier's Law Dictionary, Revised 6th Ed (1856):

UNLIQUIDATED DAMAGES. Such damages, as are unascertained. In general such
damages cannot be set-off. No interest will be allowed on unliquidated
damages. 1 Bouv. Inst. n. 1108. See Liquidated, Liquidated Damages.