empacar
pack
em-
verb-forming prefix
+
pack
pack
+
-ar
infinitive verb suffix
Empacar means to pack and can be broken down as em-0 (verb-forming prefix0) + pack1 + -ar2 (infinitive verb ending2).
verb
  1. pack
    To pack or package something
    Necesito empacar mi maleta para el viaje. // I need to pack my suitcase for the trip.