Read this excerpt from "The Cask of Amontillado" by Edgar Allan Poe and answer the question.

"A sign," he said.
"It is this," I answer, producing a trowel from beneath the folds of my roquelaire.
"You jest," he exclaimed, recoiling a few paces. "But let us proceed to the Amontillado."
"Be it so," I said replacing the tool beneath the cloak, and again offering him my arm.

Using context clues, what does the term roquelaire most probably mean?

pants
tool
arm
cloak

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