Definition of "wotcher"

wotcher¹

/wɒt͡ʃə/

interjection
1. (slang, chiefly British) A friendly greeting.
  Quotations
  “Wotcher, me old cock sparrow, how's the sleuthing business?” bellowed Sandy, pausing and balancing his saddle on one knee while he looped up the girth.
  1962, Dick Francis, chapter 19, in Dead Cert, published 2004, page 266

wotcher²

/wɒt͡ʃə/

contraction
1. (informal, chiefly British) Contraction of what do you.
2. (informal, chiefly British) Contraction of what you.
3. (informal, chiefly British) Contraction of what are you.
4. (informal, chiefly British) Contraction of what have you.