We found 18 dictionaries that define the word sounding line:

General (14 matching dictionaries)

1. sounding line: Merriam-Webster
2. sounding line: Oxford Learner's Dictionaries
3. sounding line: American Heritage Dictionary of the English Language
4. sounding line: Collins English Dictionary
5. sounding line: Vocabulary.com
6. sounding-line, sounding line: Wordnik
7. sounding line: Wiktionary
8. sounding line: Infoplease Dictionary
9. sounding line: Dictionary.com
10. Sounding line: Wikipedia, the Free Encyclopedia
11. sounding line: Rhymezone
12. sounding line: FreeDictionary.org
13. sounding line: Mnemonic Dictionary
14. sounding line: TheFreeDictionary.com

Computing (1 matching dictionary)

15. sounding line: Encyclopedia

Medicine (1 matching dictionary)

16. sounding line: Medical dictionary

Tech (2 matching dictionaries)

17. Lake and Water Word Glossary (No longer online)
18. SeaTalk Dictionary of English Nautical Language (No longer online)

(Note: See sounding_lines as well.)

Definitions from Wiktionary (sounding line) ▸ noun:  (nautical) A weighted line with distances marked off at regular intervals, used to measure the depth of water under a boat. Similar: lead line, leadline, load line, sounding, sealine, water line, load water line, groundline, throwline, ledger line, more... ▸ Words similar to sounding line ▸ Usage examples for sounding line ▸ Idioms related to sounding line ▸ Wikipedia articles (New!) ▸ Words that often appear near sounding line ▸ Rhymes of sounding line ▸ Invented words related to sounding line