Bi prefix

Front

two-footed creature

Back

biped

Front

Two-pointed tooth located on the side of the jaw

Back

bicuspid

Front

Eyeglasses with lenses that have two different sections for seeing up close and far away.

Back

Bifocals

Front

Happening every two months

Back

Bimonthly

Front

Having two different colors

Back

bicolor

Front

happening every TWO years

Back

biennial

Front

happening every TWO weeks

Back

biweekly

Front

An airplane with two pairs of wings

Back

biplane

Front

Able to speak two languages

Back

Bilingual

Front

a vehicle with two wheels

Back

bicycle