A dense mass of fog defined against clearer surrounding air, often as viewed from a distance at sea.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "fog bank" in a sentence
"The tide was high and the sky to the east, above a fog bank at the mouth of Didion Bay, glowed a muddy crimson."
"But just after the amphibian had flown past Boston Harbor, Tom pointed out a mountainous fog bank lying ahead."
"The fog bank bubbled thick as it moved, tendrils reached out and then were reabsorbed like the false feet of some crawling creature."