Dancetté.

Chambers's Encyclopaedia, Volume 3: Catarrh to Dion, p. 669

Dancetté. one of the lines of partition in Heraldry, which differs from Indented in the greater width and depth of the indentations. A fess dancetté has but three indentations, as in the subjoined figure.

A heraldic shield showing a fess dancetté, which consists of three horizontal indentations or notches along the top edge of the shield.
Fess Dancetté.
Source scan(s): p. 0680