strapper
strap·per
noun
Origin
From strap + -er, principally strap + -er (agent noun suffix). The sense referring to a poorly producing milk cow (from strap + -er) came from a dialectal sense of the verb strap as a troponym of milk: not even the most skilful milking action could coax enough milk from the udder.
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Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.