We found 10 dictionaries that define the word sons-in-law:

General (9 matching dictionaries)

1. sons-in-law: Merriam-Webster
2. sons-in-law: Oxford Learner's Dictionaries
3. sons-in-law, sons-in-law: Collins English Dictionary
4. sons-in-law: Wiktionary
5. sons-in-law: Dictionary.com
6. Sons-in-law: Online Plain Text English Dictionary
7. Sons-in-law: AllWords.com Multi-Lingual Dictionary
8. sons-in-law: FreeDictionary.org
9. sons-in-law: TheFreeDictionary.com

Business (1 matching dictionary)

10. sons-in-law: Legal dictionary

(Note: See son-in-law as well.)

Definitions from Wiktionary (son-in-law) ▸ noun:  The husband of one's child. ▸ Also see son-in-law ▸ Words similar to sons-in-law ▸ Usage examples for sons-in-law ▸ Idioms related to sons-in-law ▸ Wikipedia articles (New!) ▸ Popular adjectives describing sons-in-law ▸ Words that often appear near sons-in-law ▸ Rhymes of sons-in-law ▸ Invented words related to sons-in-law