impalement

The act of torturing or executing someone by impaling them on a sharp stake.

The joining of two coats of arms on one shield.

A space fenced in, such as by palings, possibly in the form of an enclosure or cup.

In the sense of an enclosure, the calyx of a flower. (In still older works, also spelt empalement.)

The parts of fructification are seven in number... The First part is the calyx, impalement, or flower cup.