The term BLACKBOARD is composed of seven crossword solutions: SLATE (5 letters), EVAN (4 letters), ERASER (6 letters), ERASE (5 letters), GLENN (5 letters), CHALK (5 letters), and ERASERS (7 letters). SLATE is a fine-grained metamorphic rock that can be used as a writing surface, while EVAN is a male given name. ERASER and ERASE are both related to the act of removing something, such as pencil marks from a blackboard. GLENN is another male given name, while CHALK is a soft, white, porous sedimentary rock composed of calcium carbonate. Finally, ERASERS are tools used to ERASE pencil marks from a blackboard.