birds
bicycle, binomial,...
-bicycle -bipeds
biathlonbilliards
bi-valve is a type of sex position for cows.
be bi we web
Lingual
Quadrant and quadruped are words that begin with quad. Triad, trial, triangle, tribe, tribunal and trick are words that begin with tri. Bias, bib, bible, bicycle, bid and bird are words that begin with bi.
Biscuits!
Biannual, bias, biathlon, bib, bible, biceps, bicycle, bid, big, bigwig, bike, bikini, bill, billion, bin, bingo, bio, biology, bird, biretta, birthday, bisect, bishop, bit, bite and biz are words. They begin with the letters bi.
Biannual, biathlon, bib, bible, biblical, bibliography, biceps, bicker, bid, big, bigger, big-hearted, bigot, bijou, bike, bikini, bill, billfold, billiard, binoculars, biographic, biology, biotic, bipolar, bird, birth, birthday, bitter and bizarre are words. They begin with the letters bi.
The first letters of the pairs spell "double"; the second letters spell "vision".