Lewis & Short

com-plāno, āvi, ātum, 1, v. a., to make even, level, or plain (rare).

  1. I. Prop.: terram tabulā, manibus, pedibus, Cato, R. R. 151, 3: montium juga, Suet. Calig. 37: lacum, id. Caes. 44: opera, Auct. B. Alex. 63: domum, to make even with the ground, to pull down, raze, Cic. Dom. 38, 101.
  2. * II. Trop.: complanare et mollire aspera, dura, i. e. to render tolerable, Sen. Prov. 5, 9.