Term: Cleat Image: [{"name":"images\/public\/dictionary\/Cleat_hs1joa4g.jpg","usrName":"Cleat.jpg","size":56431,"type":"image\/jpeg","thumbnail":"images\/public\/dictionary\/thCleat_oc9ztvxy.jpg","thumbnail_type":"image\/jpeg","thumbnail_size":34250,"searchStr":"Cleat.jpg,!:sStrEnd"}] Definition: Hardware piece on a boat or a dock to which lines are attached.