A fort with five bastions; = pentagon, n. 2. rare.

= star fort n.; cf. sconce, n.3 1a.

Fortification. A fort having eight bastions. Obsolete.

Fortification. A fort having a pentagonal shape, a fort with five bastions. Now historical.

Fortification. A fort with six bastions.

a fort whose ground plan is in the shape of the figure of a star, the outside edge or rampart having alternate salient and re-entrant angles; cf. e…

A square fort; a quadrangular building or block of buildings. Cf. quadrangle, n. 3.

An object having the form of a conventional image of a star (see sense 10a). = star fort n. at compounds 5. Now rare.

= star fort n.; (also) the fortifications surrounding such a fort.

A triangular fort. Obsolete.