the juice of plants of any kind, especially the ascending and descending juices or circulating fluid essential to nutrition.-the sapwood, or alburnum, of a tree.-a simpleton; a saphead; a milksop.-to subvert by digging or wearing away; to mine; to undermine; to destroy the foundation of.-to pierce with saps.-to make unstable or infirm; to unsettle; to weaken.-to proceed by mining, or by secretly undermining; to execute saps.-a narrow ditch or trench made from the foremost parallel toward the glacis or covert way of a besieged place by digging under cover of gabions, etc.