They're elongated, for comfort and codes may specify elongated instead of round.
Sickle-cell anemia.
yellow journalism
Japanese Empress Tree or Paulownia tomentosa
elevator
elevator
The elevator is the name of the box-shaped carriage that could be used instead of stairs. It was originally steam powered to move the car up and down the cables.
A star shaped bit is called a "Torx" bit.
Some people in Rome used to dig a hole to go to the bathroom and cover it with vinegar/lemon juice. However, there were communal toilets, which historians say were shaped in a circle. It is also said that they had one sponge on a stick, which they passed around to wipe all their bottoms(which isn't very sanitary if you compare with the Chinese empires). They had a system that caused the waste go into the river, called irrigation. The rich had their own separate toilets.
a stage shaped like a hallway like a model runway but with plays instead
because they are shaped cimetricly allowing for uniform positioning of them.
even distribution of heat
Elevator