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"clank" is also used as a crossword clue. If that's what you saw, the answer is often clang (5 letters).
Definitions
A sharp, heavy ringing sound, usually made by metal.
Used in a sentence
“The chains clanked.”
“Slung from his shoulders clanks a two-handed sword, the pommel a huge star-ruby carven in the image of a heart, for the heart is his sign and symbol.”
“Far less straightforward was what happened at about 0130 on Friday June 2 1944, as a long goods train was chuffing and clanking its unhurried way across the darkened landscape towards Soham, from Ely.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Metallic sound”5 letters
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