Top definition
A huge lens made by Sigma:
50-500mm f4-6.3 APO EX DG HSM.
The other day I used my Bigma to photograph Neil Armstrong's footprints on the Moon.
by linzello May 19, 2009
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2
A female with a more roundish body shape, so roundish that she needs a specially fitted door.
Oftenly used about negro females.
Hey, dude... you can't go there! you'll be squished by Big Ma jumping!

or;

Looka her! now thats a Big Ma!
by Hans Kr. April 06, 2006
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3
A woman with a sassy attitude. Someone who walks into a room and is quickly noticed. She is most times on the plus size side, yet carries herself with such grace and charisma.
Her attitude is fresh, she is definitely a Bigma.
by QwinBigma April 13, 2017
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