Sandman

n.

1.

A mythical person who makes children sleepy, so that they rub their eyes as if there were sand in them.

Noun

1.

sandman - an elf in fairy stories who sprinkles sand in children's eyes to make them sleepy

Sandman - The DoD requirements that led to APSE.

brownie, elf, gremlin, hob, imp, pixie, pixy