frogging
v.— «Experienced knitters, they will go to a thrift store and look for a sweater that is past its prime and unravel the yarn to make something new. The practice is known as “frogging,” from the words “rip it, rip it.”» —“The God Who Knits” by Lori Erickson Beliefnet.com Feb. 14 , 2006. (source: Double-Tongued Dictionary)