%valla%

a. 1. Surrounded with a wall; inclosed with a rampart. [ 1913 Webster ]

2. (Anat.) Surrounded by a ridge or elevation; as, the circumvallate papillæ, near the base of the tongue. [ 1913 Webster ]

n. (Mil.) (a) The act of surrounding with a wall or rampart. (b) A line of field works made around a besieged place and the besieging army, to protect the camp of the besiegers against the attack of an enemy from without. [ 1913 Webster ]

n. [ Pref. contra- + vallation: cf. F. contrevallation. Cf. Countervallation. ] (Fort.) A trench guarded with a parapet, constructed by besiegers, to secure themselves and check sallies of the besieged. [ 1913 Webster ]

n. [ Convallaria + L. amarus bitter. ] (Chem.) A white, crystalline, poisonous substance, regarded as a glucoside, extracted from the lily of the valley (Convallaria Majalis). Its taste is first bitter, then sweet. [ 1913 Webster ]

‖n. [ NL., from L. convallis a valley; con- + vallis valley. ] (Bot. & Med.) The lily of the valley. [ 1913 Webster ]

prop. n. One of many subfamilies into which some classification systems subdivide the Liliaceae but not widely accepted.
Syn. -- family Convallariaceae. [ WordNet 1.5 ]

n. (Chem.) A white, crystalline glucoside, of an irritating taste, extracted from the convallaria or lily of the valley. [ 1913 Webster ]

n. (Fort.) See Contravallation. [ 1913 Webster ]

n. [ From Valance. ] A large wig that shades the face. [ Obs. ] [ 1913 Webster ]

n. A vallar crown. [ 1913 Webster ]

a. [ L. vallaris. ] Of or pertaining to a rampart. [ 1913 Webster ]

Vallar crown (Rom. Antiq.), a circular gold crown with palisades, bestowed upon the soldier who first surmounted the rampart and broke into the enemy's camp. [ 1913 Webster ]

a. Same as Vallar. [ 1913 Webster ]

n. [ L. vallatio, fr. vallare to surround with a rampart, fr. vallum rampart. See Wall, n. ] A rampart or intrenchment. [ 1913 Webster ]