noun woad.
2. wad ·noun ·alt. of wadd.
3. wad ·noun a little mass, tuft, or bundle, as of hay or tow.
4. wad ·vt to form into a mass, or wad, or into wadding; as, to wad tow or cotton.
5. wad ·noun a soft mass, especially of some loose, fibrous substance, used for various purposes, as for stopping an aperture, padding a garment, ·etc.
6. wad ·vt 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.
7. wad ·noun 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.