From The Collaborative International Dictionary of English v.0.48:
Dipper \Dip"per\, n.
1. One who, or that which, dips; especially, a vessel used to
dip water or other liquid; a ladle.
[1913 Webster]
2. (Zool.)
(a) A small grebe; the dabchick.
(b) The buffel duck.
(c) The water ouzel (Cinolus aquaticus) of Europe.
(d) The American dipper or ouzel (Cinclus Mexicanus).
[1913 Webster]
The Dipper (Astron.), the seven principal stars in the
constellation of the Great Bear; popularly so called from
their arrangement in the form of a dipper; -- called also
Charles's Wain. See Ursa Major, under Ursa.
[1913 Webster]