A baby carriage can be bought from multiple locations, both on
the web and at a store. One can buy a baby carriage from Amazon,
eBay, Buy Buy Baby, and Baby Centre.
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A baby carriage is a cart which is designed for moving a baby
around while the baby is in a lying position, also known as a
stroller or a pram.
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A nanny's carriage is a pram. (pram=a conveyance for baby
transport ["perambulator" in full)