a. 1. Marked or cut with a slash or slashes; deeply gashed; especially, having long, narrow openings, as a sleeve or other part of a garment, to show rich lining or under vesture. [ 1913 Webster ]
A gray jerkin, with scarlet and slashed sleeves. Sir W. Scott. [ 1913 Webster ]
2. (Bot.) Divided into many narrow parts or segments by sharp incisions; laciniate. [ 1913 Webster ]