# drop in

> English word · Verb

## Definitions
1. Used other than figuratively or idiomatically: see drop, in.
2. To arrive casually and unannounced, with little or no warning; also, to visit without an appointment.
3. To paddle into and take off on a wave another surfer is already riding.
4. To fall in; to cave in.
5. To install components, particularly car engines.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/drop-in