English Dictionary

drop-in

noun

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.

I made a drop-in at the local library to borrow some books.

意味（1）

One who casually drops in (visits unannounced or without appointment).

The office was efficient, but not well equipped to handle drop-ins.

意味（2）

An informal event that does not require booking in advance.

意味（3）

A place that can be visited casually, without an appointment.

意味（4）

(surfing) The act of dropping in; that is, taking a wave that another surfer is already riding.

Drop-ins can and often do happen accidentally. Sometimes you're so focussed on your take-off that you just don't see the other rider.