To weave (cloth) so as to produce a pattern of diagonal parallel ribs.(verb-transitive)
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 "twill" in a sentence
"And little Dorry, 'twill be fine for her to get her mammy back, I warrant -- so 'twill."
"` twill prove So good 'twill invite a good Chapman I am Sr"
"4J\ N ay indeed, when it has ad vane d thus far, twill probably go farther; 'twill not keep"