Plural of boxing; multiple instances of fighting with fists, or the sport of boxing, or materials used to box something.
From 'boxing' (from 'box' + '-ing'), which can mean the sport, the act of striking, or the materials used in boxing items. The plural '-s' adds multiple instances.
The word 'boxings' is rare because boxing as a sport doesn't usually pluralize—but in construction, 'boxings' perfectly describes multiple protective box-like structures around pipes or wires.
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