water line

noun

"water-line" is a 9-letter English headword indexed on PlainSpell.

The verdict

“water line” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency English
10
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The outline of a horizontal section of a vessel, as when floating in the water.

Corpus desk

Index EN-water-line · water line · English

water line · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 10 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "W" thin
  • PHOTO-UNK Peer pending

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Key facts for water line
PropertyValue
Headwordwater line
LanguageEnglish
Part of speechNoun
Letters10
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “water line” in English

water linefalls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

water line is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. 6 senses are on record.

No generated misspelling entries exist for water line in our index, suggesting the orthography follows predictable English patterns. It is not paired with a close-neighbour confusable in our dataset, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.

No explicit etymology string is stored for this entry, so its spelling pattern is best understood through pronunciation rather than a traceable origin. The correct English form is water line, spelled W-A-T-E-R- -L-I-N-E.

Definition

  1. 1
    The outline of a horizontal section of a vessel, as when floating in the water.
  2. 2
    Any one of certain lines of a vessel, model, or plan, parallel with the surface of the water at various heights from the keel. In a half-breadth plan, the water lines are outward curves showing the horizontal form of the ship at their several heights; in a sheer plan, they are projected as straight horizontal lines.
  3. 3
    Any one of several lines marked upon the outside of a vessel, corresponding with the surface of the water when she is afloat on an even keel. The lowest line indicates the vessel's proper submergence when not loaded, and is called the light water line; the highest, called the load water line, indicates her proper submergence when loaded.
  4. 4
    The line corresponding to the surface of the water touching any submerged object or body.
  5. 5
    The level at which water meets land along the shore of a body of water.
  6. 6
    Used other than figuratively or idiomatically: see water, line.

Recorded use

Wiktionary examples

These source excerpts show how water line appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. The water line is to that Bend or place she should swim in when she is loaded.
  2. […] Jonah throws himself into his berth, and finds the little state-room ceiling almost resting on his forehead. The air is close, and Jonah gasps. Then, in that contracted hole, sunk, too, beneath the ship’s water-line, Jonah feels the heralding presentiment of that stifling hour, when the whale shall hold him in the smallest of his bowels’ wards.

This word in other languages

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "water line"?
"water line" is spelled W-A-T-E-R- -L-I-N-E.
What does "water line" mean?
As a noun, "water line" means: The outline of a horizontal section of a vessel, as when floating in the water.
What language does "water line" come from?
"water line" is a English word. PlainSpell covers definitions, pronunciations, and spelling data across English, Spanish, Portuguese, French, and German.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list