tidemark
/ˈtaɪdˌmɑrk/
noun
- A line or mark left on a shore or on an object by the highest or lowest point of a tide.
- The beach was littered with shells and seaweed up to the high tidemark.
- We could see the tidemark on the rocks where the water had reached during the storm.
- He measured the tidemark on the pier to track the changing sea levels.
- A visible line left on a surface (such as a bathtub or sink) by the previous water level, often from dirt or soap scum.
- She scrubbed the sink to remove the stubborn tidemark left by hard water.
- The old vase had a tidemark inside where the water had evaporated over time.
- After the bath, a ring of grime formed a tidemark around the tub.
- A figurative boundary or limit, especially one that marks a change or a high point.
- The company's profits reached a new tidemark this quarter.
- That championship game was the tidemark of his athletic career.
- The treaty set a tidemark for international cooperation on climate change.
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