What are the meanings of the"libertymen" and "bum-freezer jackets". Thank you !
context:
They ride down into the city. Everywhere the rolling walk of sailors, libertymen in bum-freezer jackets, all conversation at the bellow, and on their arms scruffy whores, loud as their men.
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What are the meanings of the"libertymen" and "bum-freezer jackets". Thank you !