"TENAILLE, fr. literally shears, a military ... {illegible}." (citation in list description)
OED says: "A small low work, consisting of one or two re-entering angles (single or double tenaille), placed before the curtain between two bastions. tenaille of the place, the face of a fortress."
Answers.com says: An outwork in the main ditch, in front of the curtain, between two bastions.
"TENAILLE, fr. literally shears, a military ... {illegible}." (citation in list description)
OED says: "A small low work, consisting of one or two re-entering angles (single or double tenaille), placed before the curtain between two bastions. tenaille of the place, the face of a fortress."
Answers.com says: An outwork in the main ditch, in front of the curtain, between two bastions.
Also a type of surgical instrument.