Why Is It Called A Pair Of Pants
Olivia Luz
Calling them a pair of pantaloons or pants as they were eventually known made sense when there were two components.
But clearly this is merely an extension of the expression pair of pants. And pants pantaloons were originally two like things. You put them on one leg at a time because they actually came in two pieces. Further confusing matters is a dozen pairs of rosaries even though there are 50 some beads.
Hence the plural usage. They are made up of. This harks back to an old use of the word pair to mean a set of more than two like or equal things making a whole. Pants is an abbreviation of pantaloons.
The phrasing was retained even after pants were made into one complete garment.
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