Forming an arch or a curve like that of an arch.(adjective)
Provided, made, or covered with an arch.(adjective)
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 "arched" in a sentence
"Brewster caught her expression and arched an eyebrow."
"Raka arched his left eyebrow and glared at Kebron, who stared back and loomed above the slender Trill man."
"Men that have the inside or sole of the foot clumsy and not arched, that is, that walk resting on the entire under-surface of their feet, are prone to roguery."