# top-drain

> English word · Verb

## Definitions
1. To drain the surface of (a field, farm, etc.).
2. To drain water or fluid from the top of a water heater or heating system, rather than from the bottom.

## Etymology
From top + drain.

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