Source : Webster's Revised Unabridged Dictionary (1913)

Th \Th\
   In Old English, the article the, when the following word
   began with a vowel, was often written with elision as if a
   part of the word. Thus in Chaucer, the forms thabsence,
   tharray, thegle, thend, thingot, etc., are found for the
   absence, the array, the eagle, the end, etc.

Source : WordNet®

Th
     n 1: the fifth day of the week; the fourth working day [syn: {Thursday}]
     2: a soft silvery-white tetravalent radioactive metallic
        element; isotope 232 is used as a power source in nuclear
        reactors; occurs in thorite and in monazite sands [syn: {thorium},
         {atomic number 90}]

Source : Free On-Line Dictionary of Computing

th
     
         The {country code} for Thailand.
     
        (1999-01-27)