Noun mouthful has 2 senses
  1. mouthful - the quantity that can be held in the mouth
    --1 is a kind of
  2. taste, mouthful - a small amount eaten or drunk; "take a taste--you'll like it"
    --2 is a kind of small indefinite quantity, small indefinite amount
    --2 is a part of helping, portion, serving
    --2 has particulars: morsel, bit, bite; swallow, sup