"ACROSS" :
-A by, for, from one side to another (a surface).
-The other side of,
example: my house is across the street.
-Adverb, wide,
example: the eye of that creature can measure 34 centimeters across.
-From, in front of. This preposition qualifies verbs meanings as follows:
1- Indicates approach through a surface,
example: she came across to talk to me.
2- Indicates a movement over an object crossing or crossed over staying,
example: he leant across the dead body to take the gun.
3- Expresses the writing of side to side from a surface,
example: the words were written across the wall.
4- Indicates all over a surface, in all its extension,
example: my father gave many talks across Spain last summer.
5- States that something affects everyone involved, without exception,
example: the issues at stake cut across party lines.
6- With parts of the body indicates the extent of a stroke or pain,
example: to hit across the face; I have a pain across my back.