tidemark

About 0.01 uses per million words.

Meaning

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

Similar words

tideline strandline waterline tide dial dividings tidefall chart datum littoral critical tide level tidal range

Often followed by

of and is in on to at

Word family

tidemarks