n.

1. 支撐（物）；【建】拱壁；扶壁
   I find your thesis lacking the buttress that it should have.

   我認為你的論文缺乏它所應有的支撐。

vt.

1. 用扶壁支撐；扶持
   The roof of this temple is buttressed by six giant pillars.

   這座神廟的屋頂是靠六根大柱子支撐的。

n.

1. a projecting support of stone or brick built against a wall.
2. a projecting portion of a hill or mountain.

v.

▸support or strengthen:

authority was buttressed by religious belief.