"Bhujanga" means "cobra" in Sanskrit. This asana is called "Bhujangasana" as the raised trunk, neck and head while practicing it resemble a cobra rearing its hood and about to strike, while the joined and stretched legs resemble its tail.
"Chakra" means "wheel" in Sanskrit. In the final position of this asana, the body is arched backward and resembles the rim of a wheel. Hence the name.
"Danda" means "stick" in Sanskrit.
"Dhanus" means "bow" in Sanskrit. In the final position of this asana, the body takes the shape of a bow, drawn tight to shoot an arrow. The stretched arms and lower legs resemble the taut bowstring, while the trunk and thighs resemble the wooden part of the bow.
"Go" means "cow" and "Mukha" means "face" in Sanskrit. When this asana is performed, the final position of the legs resembles the face of a cow.
"Matsya" means "fish" in Sanskrit. If a person lies steadily on water in this posture, he can keep floating on it easily like a fish without the help of the hands and legs, as the name of the asana suggests.
"Sukha" means "pleasant" or "comfortable" in Sanskrit. Any cross-legged sitting position which you find comfortable, in which the body does not shake and in which you can remain at ease for a long time, is called Sukhasana.
"Tri" means "three", "Kona" means "angle", and "Trikona" means "triangle" in Sanskrit The straight legs with the floor between the feet resemble the three sides of a triangle in this asana. Hence the name.
This pose is also called Downward Dog or Downward-Facing Dog.
"Veera" in Sanskrit means "brave". The way a brave man takes his position while attacking his enemy, the similar position is formed in this asana. Hence it is called as "Veerasana", the pose of a Warrior.
"Vriksha" means "tree" in Sanskrit. In the final position of this asana, you have to stand still like a tree.