Roll

(rol.) [Fr. role.] (Arch.) A round moulding much used in Gothic architecture. It is also modified by the introduction of a fillet, and is then called the roll and-fillet moulding.-(Mil.) Long-roll is a sustained roll beaten on the drums, by way of signal for the troops to form into line when about to face the enemy.-Roll call, signifies the calling over the names Fig. 566. of the men who constitute any part of a military force. [s. 775]