(colloquial) To visit informally and spontaneously.

A brief visit, especially (politics) for the purpose of attracting voters or motivating one's staff.

The action of one who drops in.

present participle of drop in

simple past tense and past participle of drop in

Third-person singular simple present indicative form of drop in

Provided for short-term use. / (manufacturing) Fit to substitute for some element in a complex system without changes to the existing infrastructure.

One who casually drops in (visits unannounced or without appointment). / An informal event that does not require booking in advance. / A place that can be visited casually, without an appointment.

plural of drop

Third-person singular simple present indicative form of drop