poundage

Short definition from Wiktionary

Noun

1. 1
   A charge based on the weight of something in pounds.
2. 2
   A charge based on the value of something in pounds sterling.
3. 3
   A weight measured in pounds.
4. 4
   Weight, especially body weight.
5. 5
   a fee charged for keeping an animal in a pound, or for its release
6. 6
   the keeping of an animal in a pound

Verb

1. 1
   To collect, as poundage; to assess, or rate, by poundage.