know (one's) beans



know (one's) beans

To be knowledgable about and/or very familiar with something. I had no idea you were such a good piano player—you really know your beans!
See also: bean, know

Common Names:

NameGenderPronouncedUsage
RoselynROZ-ə-linEnglish
ReuelROO-əl (English)Biblical
Aliyah (1)-Arabic
Anahid-Armenian
Osheen-Irish
EvaE-vah (Spanish, Italian, Danish), EE-və (English), E-fah (German), AY-vah (Dutch)Spanish, Italian, Portuguese, English, Czech, Slovak, German, Dutch, Swedish, Norwegian, Danish, Ice