====Things that have been described as a reed ====

Bullroarer- Called a Unenclosed Free Reed\\
Jaw Harp- I consider this to be an Enclosed Free Reed, Hornbostel and Sachs consider this to be a Lamellophone \\
Free Reeds- acordian, harmonica, melodica, reed organs, sheng \\ 
Lamell Reeds- Clarinet or saxophone Reeds \\
Double Reeds- Oboe, Shawm, Bassoon \\
Crushed Double Reeds- Duduk, Guanzi, Hichiriki \\
Membranophone- A double chamber where air passes from the outer chamber into the inner chamber which is a tube by forcing open a membrane that is under tension. \\ 
Invert reed- Like lips playing into a brass instrument (these are invert because its two edges that are forced open instead of forced closed like on a double reed) 
Grass Blade- This is a Air activated ribbon (a type of string) \\ 
 
====Previous Definitions====
Summarized from Wikipedia and Encyclopedia Britannica- \\
reed "A thin strip of material that vibrates to produce a sound on a musical instrument" "a thin blade of material typically a reed or thin metal that vibrates"\\

This definition has a major issue in that is describes single reeds (lamell reeds like those of a clarinet or saxophone) as well as free reeds (like those of a harmonica) but inadequacy describes the behavior of double reeds (or any other class listed above) because the focus is on the shape of the material. 
====My New Definition ====

A reed is any solid material that vibrates in a stable and consistent manner in response to wind as the generating force of the oscillation.  This is distinct from how flutes operate as the solid material the flute is made of is not required to vibrate for the instrument to operate, only the Air Column or Cavity Resonance is required. 
===Understanding the distinction ===

Wind --> Material that vibrates in response --> Sound is directed into a resonating tube (air column with standing waves) \\
Wind --> An edge that causes an oscillation --> Sound is generated in the Air Column with Standing Waves or in a Helmholtz Resonator with Cavity Resonance ((http://hyperphysics.phy-astr.gsu.edu/hbase/Waves/cavity.html)) \\