from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A heavy, warm, waterproof laced boot.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A shoe, especially a warm, waterproofed boot.
Alteration (influenced by shoe) of pidgin Delaware seppock, shoe, shoes, from Unami chípahko, shoes.(American Heritage® Dictionary of the English Language, Fourth Edition)
From the Unami term chipakw/chipàkw ("shoe"); the spelling altered under the influence of the English words shoe and pack. (Wiktionary)