اسم ( noun )
• (1) تعریف: a person or machine that puts heads on something, such as nails, rivets, and the like.
• (2) تعریف: (informal) a headfirst dive or fall.
- He took a header off the roof.
• (3) تعریف: a brick or stone laid across a wall so that its short end is exposed. (Cf. stretcher.)
• (4) تعریف: in word processing or printing, information that is repeated at the top of a sequence of pages. (Cf. footer.)
• (5) تعریف: a pipe or tube that brings together several pipes or tubes, as at an exhaust manifold.