1. Na-adjective (keiyodoshi), Noun which may take the genitive case particle 'no', Noun

   1.

   absorbed in; immersed in; crazy about; obsessed with

2. Noun, Na-adjective (keiyodoshi)

   2.

   forgetting oneself; daze; trance; ecstasy

3. Noun

   3.

   within a dream; while dreaming

Example sentences

• 彼は野球に夢中だ。

  He is obsessed with baseball.

• トムは君に夢中さ。

  Tom has a crush on you.