woad.-a little mass, tuft, or bundle, as of hay or tow.-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.-a soft mass, especially of some loose, fibrous substance, used for various purposes, as for stopping an aperture, padding a garment, etc.-to form into a mass, or wad, or into wadding; as, to wad tow or cotton.-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.-alt. of wadd