Weep hole

weep hole

[′wēp ‚hōl] (civil engineering) A hole in a wood sill, retaining wall, or other structure to allow accumulated water to escape.

Weep hole

A small opening in a wall or window member, through which accumulated condensation or water may drain to the building exterior, such as from the base of a cavity wall flashing or a skylight.

weep hole

1. A small opening in a wall or window member, through which accumulated condensation or water may drain to the building exterior, as from the base of a cavity wall, a wall flashing, or a skylight. 2. A hole near the bottom of a retaining wall, backfilled with gravel or other free-draining material, to permit water to drain to the outside of the wall, so as to prevent the buildup of pressure behind the wall.