Undergroan v. t. : To groan beneath.

Example:


Taxonomy
Weather Underground, Weather, Maps, storm, marine, the United Kingdom, current conditions, forecasts, Countries in Europe, rain and snow, photos, Country, severe weather, low pressure system, weather services, satellite maps, aviation weather, tropical storm.

Defination from the web:
Includes current and historical weather conditions, detailed forecasts, and severe weather advisories as well as aviation forecasts.