1. Referring to a harbor, river, estuary, and so on, when there is not sufficient ice present to interfere with navigation. 2. Descriptive of a water surface completely free of ice.
Related terms:
1. Referring to a harbor, river, estuary, and so on, when there is not sufficient ice present to interfere with navigation. 2. Descriptive of a water surface completely free of ice.
Related terms: