simple past tense and past participle of drop

allowed to drop or fall. / (of a phone call) suddenly disconnected.

(idiomatic) To arrive casually and unannounced, with little or no warning; also, to visit without an appointment. / (surfing) To paddle into and take off on a wave another surfer is already riding.

Alternative spelling 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.

simple past tense and past participle of drop in

present participle of drop in

The action of one who drops in.

present participle of drop by