Selecting edges for fur

I am using weight painting to have fur added to my character. Does anyone know how to select specific edges to delete sections of a weighted area to prevent fur from being applied? I know you can use the subtract brush in weight painting but I need to select specific edges to delete fur.

Yup IN weight paint mode look for these buttons, face mask and vert mask. if you turn this on and shift+click you can select and deselect vertices. Then choose your wight and then use shift+k to assign that weight only to the selected verts.

If you preselect an edge in edit mode before going into weight mode then those verts will be preselected.