Definition of "shirtsleeve" []

• The sleeve of a shirt. (noun)
• The state of wearing no coat, jacket, or other outer garment over one's shirt: dined in shirtsleeves; balmy weather that had them down to their shirtsleeves. (noun)
• Dressed without a coat: shirtsleeve spectators; a shirtsleeved orchestra. (adjective)
• Calling for the removal of a coat or jacket; not requiring a coat or jacket for comfort: shirtsleeve weather; a shirtsleeves picnic. (adjective)
• Marked by informality or straightforwardness: shirtsleeve politics; a shirtsleeves conference. (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.

• "From the Mars biolab forward to Control Deck A constituted the so-called "shirtsleeve" area of the ship."
• "He just needed a toothpick in his mouth and a pack of smokes rolled up his shirtsleeve."
• "Tak wiped it away with the shirtsleeve he'd been wiping his nose on all evening, which only compounded the filth."