资料来源 : Webster's Revised Unabridged Dictionary (1913)

Pocketful \Pock"et*ful\, n.; pl. {Pocketfuls}.
   As much as a pocket will hold; enough to fill a pocket; as,
   pocketfuls of chestnuts.

资料来源 : WordNet®

pocketful
     n : the quantity a pocket will hold