pillaryoudaoicibaDictYouDict[pillar 词源字典]
pillar: [13] Pillar comes ultimately from Latin pīla ‘pillar’ (source also of English compile, pilaster [16], and pile ‘heap’). In Vulgar Latin this was extended to *pīlāre, which passed into Anglo-Norman piler. This was the form in which English originally acquired it, and the -ar ending was not grafted on to it until the 14th century.
=> compile, pilaster, pile[pillar etymology, pillar origin, 英语词源]
pillar (n.)youdaoicibaDictYouDict
c. 1200, from Old French piler "pillar, column, pier" (12c., Modern French pilier) and directly from Medieval Latin pilare, from Latin pila "pillar, stone barrier." Figurative sense of "prop or support of an institution or community" is first recorded early 14c. Phrase pillar to post is c. 1600, originally of tennis, exact meaning obscure.