Sweet raised bread dried and browned in an oven.(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.
Use "rusk" in a sentence
"In front of Mrs. Minister stood a very large yellow bowl filled with what she called rusk -- a preparation unfamiliar to me, made by browning and crushing the crusts of bread and then rolling them down into a coarse meal."
"Just now her rusk was the all-absorbing topic of thought."
"Not only had he most intelligently brought me a fresh ice, but he had brought the particular kind of rusk for which I had asked."