We found 3 dictionaries that define the word 100's:

General (2 matching dictionaries)

1. 100s: Vocabulary.com
2. 10.0s, 100's, 100s: Wiktionary

Slang (1 matching dictionary)

3. 100s: Street Terms: Drugs and the Drug Trade

(Note: See 100 as well.)

Definitions from WordNet (100) ▸ noun:  ten 10s ▸ adjective:  being ten more than ninety ▸ Also see 100 ▸ Words similar to 100's ▸ Usage examples for 100's ▸ Idioms related to 100's ▸ Wikipedia articles (New!) ▸ Popular adjectives describing 100's ▸ Popular nouns described by 100's ▸ Words that often appear near 100's ▸ Rhymes of 100's ▸ Invented words related to 100's