What do a.m. and p.m. stand for?

roll cloud

noun, Meteorology
1. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the web for roll cloud
  • Sometimes the winds push up air above them, forming a shelf cloud or detached roll cloud.

Word of the Day

Difficulty index for roll cloud

Few English speakers likely know this word

Word Value for roll

Scrabble Words With Friends

Nearby words for roll cloud