Definition of "sentry box" []

• A small shelter for a posted sentry. (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.

• "I was all the time faithfully steering by the sign of the tobacco shop, and the shop with the jumping-jack in the window, and the garden with the iron fence, and the sentry box opposite a drug store, and all the rest of my landmarks, as carefully entered on my mental chart the day before."
• "Just ahead to the south on the other side of Ann Street, I noticed that everyone passing glanced into what looked like a seven-foot-high, extremely narrow sentry box with a gabled roof."