Definition of "guardrail" []

• A protective railing, as on a staircase or along a highway. (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.

• "Sarnia Mayor Mike Bradley said he is open to discussing the matter, but "it's hard to say" if a guardrail is a good idea."
• "The guardrail is a long stretch of wooden railing that divides the Robert Moses Parkway and Whirlpool Street running from Main Street near the Rainbow Bridge to Ontario Avenue near the Whirlpool Bridge in the North End. The commission consists of a 20-person board along with countless boosters and volunteers."
• "I can sometimes run off on tangents if I don't have a "guardrail" in place."