Source : Webster's Revised Unabridged Dictionary (1913)

Crashing \Crash"ing\, n.
   The noise of many things falling and breaking at once.

         There shall be . . . a great crashing from the hills.
                                                  --Zeph. i. 10.

Crash \Crash\ (kr?sh>), v. t. [imp. & p. p. {Crashed} (kr?sht);
   p. pr. & vb. n. {Crashing}.] [OE. crashen, the same word as
   crasen to break, E. craze. See {Craze}.]
   To break in pieces violently; to dash together with noise and
   violence. [R.]

         He shakt his head, and crasht his teeth for ire.
                                                  --Fairfax.

Source : WordNet®

crashing
     adj : (used of persons) informal intensifiers; "what a bally (or
           blinking) nuisance"; "a bloody fool"; "a crashing
           bore"; "you flaming idiot" [syn: {bally(a)}, {blinking(a)},
            {bloody(a)}, {blooming(a)}, {crashing(a)}, {flaming(a)},
            {fucking(a)}]