tidemark

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noun

a line (of seaweed or differently coloured sand etc) on the shore showing the level of high or low tide

Scrabble 15
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Meanings

nountidemark (plural tidemarks)

plural tidemarks

  1. a line (of seaweed or differently coloured sand etc) on the shore showing the level of high or low tide
  2. broadlyany mark showing the limit of some past activity
  3. humorousa line of scum left on a bath tub when the water is drained away

Origin

From tide + mark.

Full word history & related roots →
Cite this entry
APA

tidemark. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/tidemark

MLA

“tidemark.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/tidemark. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “tidemark,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/tidemark.

Source: tidemark on Wiktionary, CC BY-SA 4.0.