Platitude

[William Hupy]

Wow, I never saw the connection. From French for flatness, also plat for flat. A plat book is a flat book of maps indicating land divisions. But also this relates to plateau, table land. Going backward, perhaps from Latin, plattus, from Greek,platys, meaning broad, flat. I will surmise her that a platypus with a broad, flat snout is thus named. See also plaice.

[Slava]

Taken up and treated here.