A lure is a pair of bird’s wings tied together at the end of a cord; it’s swung on the cord, mimicking a flying bird, to recall a falcon in flight. It is more fully called a “hawk’s lure” for that reason. It’s a period charge, found in the allusive arms of Fauconer, 1385 [DBA2 386]. The lure’s cord is to chief by default.
A lure is not the same charge as a “vol”, “wings conjoined” or “wings conjoined in lure”, though they are similar.
The Royal University of Scirhavoc bears: Or, on a pale purpure three hawk’s lures Or.
Katerine del Val bears: Vert, in bend three hawk’s lures argent.
William Wildblood bears: Vert, a hawk’s lure argent, a bordure Or.