Pleaches meaning : An act or result of interweaving; specifically, a hedge or lattice created by interweaving the branches of shrubs, trees, etc. A branch of a shrub, tree, etc., used for pleaching; a pleacher. A notch cut into a branch so that it can be bent when pleaching is carried out. To unite by interweaving, as branches of shrubs, trees, etc., to create a hedge; to interlock, to plash.