Definition from Wiktionary, the free dictionary
Origin obscure (possibly Celtic) but dates back at least to the 14th century. Scots; compare Gaelic pigean, diminutive of pigeadh, pige (“an earthen jar, pitcher, or pot”), Irish pigin, pighead, Welsh piccyn.
piggin (plural piggins)
- (dialect) A small pail, can or ladle with the handle on the side; a lading-can. In the colonial era, some buckets were made like a small barrel, but with one stave left extra long. This stave would be carved into a handle so the bucket could be used as an oversized scoop for scattering grain, slopping the hogs, etc.