Word: waterline
Part of speech: Noun
Syllables: wa
ter
line
Definition: A line showing where the water has been, usually a line separating dry land and wet areas; a watermark or tidemark.
Morphemes:
Affix: water
Language: en
PoS: Noun
Meaning: A body of water, almost always a river.
Affix: line
Language: en
PoS: Verb
Meaning: To mark with a line or lines, to cover with lines.