Meaning of Ｂ級 in Japanese

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Definition of Ｂ級

きゅう(kyuu) 【級】

(n, n-suf) class, grade, rank; school class, grade
彼女は最高級のものしか好まない。
She likes nothing but the best.

ビー(bii) · ベー(bee) 【Ｂ ·ｂ】

ビーきゅうグルメ(biikyuugurume) 【Ｂ級グルメ】

(n) cheap everyday food that most people enjoy (e.g. ramen, curry, etc.); eating cheap delicious food; person who seeks out cheap delicious food