Definition of "upthrust" []

• An upward thrust, especially of part of the earth's crust. (noun)
• To thrust or be thrusted upward. Used especially of the earth's crust. (verb-transitive)

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.

• "There were grim rock isles and islets beyond counting, dim snow-covered ranges beyond, and everywhere upstanding cliffs too steep for snow, outjuts of headlands, and pinnacles and slivers of rock upthrust from the boiling sea."
• "There were grim rock isles and islets beyond counting, dim snow - covered ranges beyond, and everywhere upstanding cliffs too steep for snow, outjuts of headlands, and pinnacles and slivers of rock upthrust from the boiling sea."
• "To cup the small, upthrust breasts, rubbing them to pebble hardness."