一切經音義 14.29

14.29

凹凸（上烏瓜反又音鵶交反下田頡反皆古文象形字也或作窊垤也）。

凹凸 Indentations and protrusions: (The first character has the fanqie 烏瓜 [wā], and also the sound 鵶交 [yāo]. The second character has the fanqie 田頡 [tié]. Both are ancient pictographic characters. They are also written 窊 and 垤).