单词 placent 释义 ▪ I. † placent, n. Obs. rare.[ad. L. placenta a cake: see placenta.]A flat cake or tablet.1603F. Herring Cert. Rules (1625) B ij b, Certaine Placents or Amulets confected of Arsenicke.1617T. Adams Gen. Pract. Phisicke (N. & Q. 7th Ser...