pie

From Middle English pye, pie, pey (“baked dish, filled pastry”), possibly attested earlier (c. 1199) in the surname Piehus (“pie-house?”). Further origin uncertain. Relation to Middle English pie, pye (“magpie”) has been suggested due to correspondences between other similar foods and the names of birds (compare haggis (“Scottish dish”) and haggess (“magpie”); and chewet (“meat pie”) and chewet (“chough, jackdaw”); however, the baked dish may instead be named after a creator with the surname Pie, a common name at the time. The surname is ultimately derived from the bird above, and thus from Old French pie, from Latin pīca (“magpie”). If true, then doublet of speight.

出典: Wiktionary「pie」（CC BY-SA 4.0）