(US, slang, rare) To do something that is impossible or very difficult, with connotations of pointlessness.

(idiomatic) To do, believe, or pursue something wrong or inappropriate; to take the wrong approach; to follow a false lead; to blame or rebuke the wrong person.

present participle of bark up the wrong tree

(idiomatic, humorous) To leave, depart.

A tropical lowland frog (Rhacophorus arboreus) whose habitat range is mostly restricted to Japan's Honshū

Oecanthus niveus.

(informal) Extremely bored.

plural of forest green tree frog

plural of narrow-winged tree cricket

Synonym of Charlie Brown tree.