Ten-year-old Alex, from Oceanside, California, wonders if a cat’s flicking tail inspired the expression telltale sign, meaning “an indicator.” The word is telltale, not its soundalike telltail. About 400 years ago, a telltale was a...
flotsamist n.— «Where and when something reaches shore depends mainly on weight, wind, and currents. Experts can study flotsam—driftwood, in particular—that help them understand ocean currents and weather patterns. Nature also provides...
witness mark n. generally, an intentional, accidental, or naturally occurring spot, line, groove, or other contrasting area that serves as an indicator of certain facts; in geography and surveying, a blaze, cut, hole, paint splash, or message...
telltale n. on an automobile’s instrument panel, an indicator which relays information about the vehicle to the driver. (source: Double-Tongued Dictionary)