witness mark
n.— «Development of a material cutting machine employing an ultrasonic cutting blade that is three times faster than earlier methods. The same equipment automatically marks the material with either witness mark lines or part numbers using an ink-jet process.» —“B-2 Bomber Development New Design, Production Tools Will Play Key Role in B-2 Cost” in Los Angeles Aviation Week & Space Technology Dec. 5, 1988. (source: Double-Tongued Dictionary)
Further reading
Amy from Charlotte, North Carolina, reports a dispute arose when visiting her brother’s family. Is a large container for storing sugar properly called a can or a canister? The answer involves prototype theory, which in cognitive linguistics and...
A listener named Lita who grew up in Cuba shares her favorite Spanish idiom for “working hard”: sudando tinta, or literally, “sweating ink.” This is part of a complete episode. Transcript of “Sweating Ink” We had a voicemail from Lita Longa and she...