what is a mooring
Definition of mooring. 1  1 : an act of making fast a boat or aircraft with lines or anchors. 2  2a : a place where or an object to which something (as a craft) can be mooredb : a device (as a line or chain) by which an object is secured in place. 3  3 : an established practice or stabilizing influence : anchorage 2 âusually used in plural.