From one end or side of something to the other. expressing movement into one side and out of other side of opening etc.. moving in one side and out of other side of.

(of ornamental design or carving) made to resemble partly unrolled scroll of parchment. action of moving text or graphics up, down, or across on computer screen. To move up and down a computer screen.

Causing trouble. Something difficult to deal with or causes trouble.

To need to do something, to make it necessary.

A structure with a roof and walls, e.g. a house. To establish e.g. a reputation, over time.

One more, but not this. used to refer to additional person or thing of same type as one. additional person or thing of same type.

needing much effort or skill to accomplish, deal with, or understand.

according to rules of logic or formal argument.

having paid employment. action of doing work. To be functioning properly, e.g. a car.

compound present in body as neurotransmitter.

advantage or profit gained. Good results or effects, something advantageous. To have a good effect or be helpful.

Activity of working to make a profit.

To escape from a place such as a jail.

easily perceived or understood.

expert in neuroscience. .