The Collaborative International Dictionary of English v.0.48:
Bank \Bank\, v. t. [imp. & p. p. Banked(b[a^][ng]kt); p. pr. &
vb. n. Banking.]
1. To raise a mound or dike about; to inclose, defend, or
fortify with a bank; to embank. "Banked well with earth."
2. To heap or pile up; as, to bank sand.
3. To pass by the banks of. [Obs.] --Shak.
4. (Engineering) To build (a roadway or railroad) with an
inclination at a curve in the road, so as to counteract
centrifugal forces acting on vehicles moving rapiudly
around the curve, thus reducing the danger of vehicles
overturning at a curve; as, the raceway was steeply banked
at the curves.
To bank a fire, To bank up a fire, to cover the coals or
embers with ashes or cinders, thus keeping the fire low