chain tower
noun1
Either of a pair of structures built on each side of a river or harbour mouth from which defensive chains were raised or lowered
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
noun
Either of a pair of structures built on each side of a river or harbour mouth from which defensive chains were raised or lowered
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
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