trussing

 The timbers, etc., which form a truss, taken collectively.  Weale.  [1913 Webster]

 The art of stiffening or bracing a set of timbers, or the like, by putting in struts, ties, etc., till it has something of the character of a truss.  [1913 Webster]

 The act of a hawk, or other bird of prey, in seizing its quarry, and soaring with it into air.  [1913 Webster]