Meaning of surname;- BUSING

Leavesi have been wondering what the meaning of the surname of my Ancestors
was.
my particular line came from mecklenberg, were in Rostock, in 1488, and from
1811 as far as i can tell.

would some person be able to tell me the meaning of the name.
the name is often spelt BUESING, BUISING, would that have the same meaning.

does anyone know if there is a crest for those names>

thank you,
Norm BUSING
Researching:- BUSING, BUESING Rostock, Mecklenberg:;
Busing, New Zealand; Busing, Buising, Buesing, Qld, AUST
SULLIVAN, Ireland , Sth Aust,Victoria, AUST; New Zealand
HOFFMAN,Cty Kerry Ireland;Hudson, NH, USA; New Zealand
PUTT, Devon England; Taranaki, NEW ZEALAND
SAYLES; Quebec, Canada; Akaroa, NZ; Waiarapa, NZ;
normbus@actrix.gen.nz
Wellington, NEW ZEALAND

Hello Norm,
in "Deutsches Namenlexikon" by Hans Bahlow (1980) I found this:
Buse, Buseke, Busemann (Hamburg often, Rostock): middle low German "buse" =
"Fischerboot - Kutter" (fishing boat) for herring fishery.
Hinrich Buse, Henneke Buseke 1318 Luebeck, Johann Buse 1376 Greifswald, as
well as P. Buseman 1353. - Today still "Buese", "Heringsbuese" (dutch
"buis", engl. "buss").
I dont't know anything about crests.

Anne Schwarm