We found 8 dictionaries that include the word yoi:

General (4 matching dictionaries)

1. Yoi, yoi: Wordnik [home, info]
2. YOI: Dictionary.com [home, info]
3. Yoi: Wikipedia, the Free Encyclopedia [home, info]
4. YOI: Wiktionary [home, info]

Miscellaneous (1 matching dictionary)

5. YOI: Acronym Finder [home, info]

Slang (1 matching dictionary)

6. Yoi, yoi: Urban Dictionary [home, info]

Sports (2 matching dictionaries)

7. yoi: Hickok Sports Glossaries [home, info]
8. Yoi: Sports Definitions [home, info]

Definitions from Wiktionary (YOI) ▸ noun:  A preparatory position in karate, with the arms slightly forward, elbows slightly bent, and fists closed. ▸ noun:  Initialism of young offender institution.almighty dollar, nickel and dime, nickel-and-dime, two cents, two a penny, nickel, two-bit, penny wedding, brass farthing, pin money, more... ▸ Words similar to yoi ▸ Usage examples for yoi ▸ Idioms related to yoi ▸ Civic discussion about yoi (New!) ▸ Popular adjectives describing yoi ▸ Words that often appear near yoi ▸ Rhymes of yoi ▸ Invented words related to yoi