1A mark left or reached by the sea on a shore at the highest point of a tide.
- When a high tide occurs and the tidemark reaches beyond the normal beach line, this tends to create certain element of fear in the people.
- In a review article, he concluded that physical factors were most important to determine the upper and lower limits of intertidal communities, but biological factors predominated in life between the tidemarks.
- I have seen them feeding at the tidemark with snow buntings and pipits and they also find seeds in the marram hills.
1.1British informal A grimy mark left on a surface, especially around the inside of a bath or washbasin, at the level reached by water: the basin was ringed by a tidemark composed of specks of hair and shaving cream
More example sentences
- I wash my dishes weekly, bath tidemarks don't distract me.
- It rises up to the narrow tidemark and with a swift flick of his wrists, it squeaks to a stop.
- In any case, I am far too busy breaking up concrete in my backyard and repainting the growing tidemark on my ceiling where the air-conditioner leaked.
For editors and proofreaders
Line breaks: tide|mark
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