from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A form of redan in fortifications; a swallowtail.
from the GNU version of the Collaborative International Dictionary of English
- n. A form of redan, so named from its shape; -- called also swallowtail.
from The Century Dictionary and Cyclopedia
- n. In fortification, an outwork with two salient and three reëntering angles.
priest + cap, from its shape. (Wiktionary)