From The Collaborative International Dictionary of English v.0.48:
Wad \Wad\, v. t. [imp. & p. p. Waded; p. pr. & vb. n. Wadding.] [1913 Webster] 1. To form into a mass, or wad, or into wadding; as, to wad tow or cotton. [1913 Webster]
2. To insert or crowd a wad into; as, to wad a gun; also, to stuff or line with some soft substance, or wadding, like cotton; as, to wad a cloak. [1913 Webster] Wad
From The Collaborative International Dictionary of English v.0.48:
Wad \Wad\, Wadd \Wadd\, n. (Min.) (a) An earthy oxide of manganese, or mixture of different oxides and water, with some oxide of iron, and often silica, alumina, lime, or baryta; black ocher. There are several varieties. (b) Plumbago, or black lead. [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Wad \Wad\, n. [See Woad.] Woad. [Obs.] [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Wad \Wad\, n. [Probably of Scand. origin; cf. Sw. vadd wadding, Dan vat, D. & G. watte. Cf. Wadmol.] [1913 Webster] 1. A little mass, tuft, or bundle, as of hay or tow. --Holland. [1913 Webster]
2. Specifically: A little mass of some soft or flexible material, such as hay, straw, tow, paper, or old rope yarn, used for retaining a charge of powder in a gun, or for keeping the powder and shot close; also, to diminish or avoid the effects of windage. Also, by extension, a dusk of felt, pasteboard, etc., serving a similar purpose. [1913 Webster]
3. A soft mass, especially of some loose, fibrous substance, used for various purposes, as for stopping an aperture, padding a garment, etc. [1913 Webster]
Wed hook, a rod with a screw or hook at the end, used for removing the wad from a gun. [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Woad \Woad\, n. [OE. wod, AS. w[=a]d; akin to D. weede, G. waid, OHG. weit, Dan. vaid, veid, Sw. veide, L. vitrum.] [Written also wad, and wade.] [1913 Webster] 1. (Bot.) An herbaceous cruciferous plant (Isatis tinctoria) of the family Cruciferae (syn. Brassicaceae). It was formerly cultivated for the blue coloring matter derived from its leaves. See isatin. [1913 Webster]
2. A blue dyestuff, or coloring matter, consisting of the powdered and fermented leaves of the Isatis tinctoria. It is now superseded by indigo, but is somewhat used with indigo as a ferment in dyeing. [1913 Webster]
Their bodies . . . painted with woad in sundry figures. --Milton. [1913 Webster]
Wild woad (Bot.), the weld (Reseda luteola). See Weld.
Woad mill, a mill grinding and preparing woad. [1913 Webster]