Definify.com
Webster 1913 Edition
Unballast
Un-bal′last
,Verb.
 T.
 [1st pref. 
un- 
+ ballast
.] To free from ballast; to discharge ballast from. 
Totten.
 Un-bal′last
,Adj.
 Not ballasted. 
[Obs. & R.] 
Addison.
 Webster 1828 Edition
Unballast
UNBAL'LAST
,Verb.
I.
  Definition 2025
unballast
unballast
English
Verb
unballast (third-person singular simple present unballasts, present participle unballasting, simple past and past participle unballasted)
- (transitive) To remove the ballast from.