damp course 
(also damp-proof course)
noun British
A layer of waterproof material in the wall of a building near the ground, to prevent rising damp.An insulated concrete floor was laid, with a damp course up the walls and dry-lining downstairs....
- In recent years, Mr Parrett has become a leading expert in damp problems and says he has yet to encounter a true case of rising damp caused by the failure of an existing damp-proof course.
- In older houses check the pointing, particularly in courses of bricks below the damp course.
- metabolous
- metaboly
- metaborate
- metaboric acid
- metabotropic
- metabranchial
- metacarpal
- metacarpophalangeal
- metacarpus
- metacenter
- metacentre
- metacentric
- metacercaria
- metacercarial
- metacharacter
- metachemistry
- metachromasia
- metachromatic
- metachromatic leukodystrophy
- metachromatism
- metachrome
- metachromism
- metachronal
- metachronism
- metachronous