tip \tip\, v. t. cf. lg. tippen to tap, sw. tippa, and e. tap
   to strike gently.
   1. to strike slightly; to tap.
      1913 webster

            a third rogue tips me by the elbow.   --swift.
      1913 webster

   2. to bestow a gift, or douceur, upon; to give a present to;
      as, to tip a servant. colloq. --thackeray.
      1913 webster

   3. to lower one end of, or to throw upon the end; to tilt;
      as, to tip a cask; to tip a cart.
      1913 webster

   to tip off, to pour out, as liquor.

   to tip over, to overturn.

   to tip the wink, to direct a wink; to give a hint or
      suggestion by, or as by, a wink. slang --pope.

   to tip up, to turn partly over by raising one end.
      1913 webster
see also:
to tip off to tip over to tip the wink to tip up