Weephole

Weepholes are small openings located near the base of the outer wall of brick veneer or masonry construction for ventilation and drainage purposes. Raising the finished ground level above weepholes will restrict adequate vcentilation and drainage and may allow moisture and insects such as termites to enter the building. Weepholes should not be obstructed or filled and use of fine mesh screens are not recommended as they tend to block easily.

WIKIPEDIA ENTRY FOR WEEP HOLE