Words that start with B

Blue heelers, also called Australian cattle dogs, are a medium-sized, energetic dog that was originally bred to herd cattle. They have dense, coarse hair. When they are kept as a pet rather than a working dog, they need lots of exercise and activities to keep them occupied or they get bored and destructive. As they herd cattle by nipping at them, they can be a nippy dog and will need chew toys. They can become very loyal to their owners and aggressive to anyone else they consider a threat.

The bluebird is a small songbird that is bright blue on its back and wings and a duller color underneath. It lives in open country like fields, meadows, and farmland. Bluebirds hop around on the ground to look for insects and berries, and they nest in holes in trees or they might nest in bird boxes if you provide them. They're known for their cheerful, clear songs.

Something is described as blunt when it is not sharp compared to something similar. For example, butter knives are blunt and steak knives are sharp. Baseball bats are blunt and swords are sharp.
The photo is of some blunt pencils. Pencils are hard to draw with when they are blunt.

A blurb is a brief announcement or advertisement.

The boab, or baobab, is a type of tree found in northern Australia. There are other kinds of baobab found in Madagascar and Africa. Boabs look like a bottle, with a very swollen trunk that narrows at the top.

A board is a piece of wood that is wide and long but quite thin. Boards are usually used to make floors from, or for cladding on walls.

A bobcat is a type of lynx found in America. All kinds of lynx have short tails, not just the bobcat.

Something is bogged if it has sank into bog-like ground. You can get bogged in wet dirt or dry sand.
The car in the picture is bogged.

Something boils when it becomes so hot it changes from liquid to a gas. The picture is of some water boiling on a stove top. You can see the gas being made, in the form of bubbles in the water.
People boil water so they can make soup or tea or coffee.

The trunk of a tree is also called a bole. The bole often refers to the lowest, widest part of the tree's trunk.