Descriptive of the condition of a porcelain enameled surface that has lost its natural gloss and become powdery.

The formation of a powdery surface condition from the disintegration of a binder or elastomer, as in a coating such

A chalkboard frame, operating hardware, and accessories.

A marking surface, primarily for use with chalk, which is cleanable and reusable.

A soft limestone, usually white, gray, or buff in color, composed chiefly of the calcareous remains of marine organisms.

A committee room off the main part of an ancient Roman lawcourt (basilica).

1.A portico, or hall supported by columns, or any addition of like character connected with any ancient basilica; hence a