CEDICT
cylinder
Wiktionary
一直线常与定直线平行,绕定直线而旋转,又以平行的二平面横截之,则二平面及旋成的圆面所界成的立体为「圆柱体」。
重編國語辭典
The piston does not come into contact with the cylinder cover.
Source: Tatoeba