Definitions
The level where water meets the side of a boat, shore, or structure.
Word origin
From water + line.
Used in a sentence
“Down here along the waterline, the Enterprise has a belt of thick antitorpedo armor. It's not too promising.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer2 curated clues
01“Boat hull level”9 letters
02“Hull mark”9 letters
Not quite right?
"Search similar patterns."
W________