librar
to free
liberate
to set free
+
-ar
verb suffix
Librar means to free and can be thought of as liberate0 + -ar1 (verb suffix1), forming the Spanish infinitive verb for setting free.
verb
  1. to free
    To free or release from confinement, obligation, or burden
    Lograron librar a los rehenes después de largas negociaciones. // They managed to free the hostages after long negotiations.
  2. to avoid
    To avoid or escape from something unpleasant
    Por suerte, libré el accidente por unos segundos. // Luckily, I avoided the accident by a few seconds.