arm·ful
 /ˈɑɚmˌfʊl/  noun  ,  pl   arm·fuls  also   arms·ful /ˈɑɚmzˌfʊl/ [  count  ]
  : an amount that can be carried in a person's arm or arms
  — usually + of
   She returned from the library with an armful of books.
   stacking armfuls of wood to bring in for the fireplace