A person who overnights, or stays overnight. / Something that serves overnight travel, such as a night train. / (informal) A stay or event that takes place overnight.

plural of overnighter

simple past tense and past participle of overnight

present participle of overnight

Third-person singular simple present indicative form of overnight

plural of overnight

During or throughout the night, especially during the evening or night just past. / (figuratively) In a very short (but unspecified) amount of time.

Occurring between dusk and dawn. / Complete before the next morning. / Of an activity or event in which participants stay overnight.

(intransitive) To stay overnight; to spend the night. / (transitive, US) To send something for delivery the next day.

Items delivered or completed overnight. / An overnight stay, especially in a hotel or other lodging facility.