Longman Dictionary of Contemporary English
tide-mark
noun
EXAMPLES FROM CORPUS
▪ At the highest point of the rising damp there will be an ugly tide-mark.
Usage examples of "tide-mark".
Jack and Stephen went ashore, followed by Seymour and Reade, Bonden and a young foretopman called Fazackerley: they carried a compass, tools, a bottle, and a pot of paint, and as they walked up the damp sand to the tide-mark the sun rose behind them.
Touching these solemn ancientries, and there, The silent River ranging tide-mark high And the callow, grey-faced Hospital, With the strange glimmer and glamour of a dream!