across

from The American Heritage® Dictionary of the English Language, 5th Edition.

• preposition On, at, or from the other side of.
• preposition So as to cross; through.
• preposition From one side of to the other.
• preposition Into contact with.
• adverb From one side to the other.
• adverb On or to the opposite side.
• adverb Crosswise; crossed.
• adverb In such a manner as to be comprehensible, acceptable, or successful.
• adjective Being in a crossed position.

from The Century Dictionary.

• From side to side; in a crossing or crossed manner; crosswise.
• From one side to another; transversely; in a transverse line: as, what is the distance across? I came across in a steamer.
• Adversely; contrarily: as, “things go across,” Mir. for Mags., p. 344
• From side to side of, as opposed to along, which is in the direction of the length; athwart; quite over: as, a bridge is laid across a river.
• Transverse to the length of; so as to intersect at any angle: as, a line passing across another.
• Beyond; on the other side of.

from the GNU version of the Collaborative International Dictionary of English.

• preposition From side to side; athwart; crosswise, or in a direction opposed to the length; quite over.
• preposition to come upon or meet incidentally.
• preposition to go by a direct course across a region without following the roads.
• adverb From side to side; crosswise.
• adverb obsolete Obliquely; athwart; amiss; awry.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• preposition To, toward, or from the far side of (something that lies between two points of interest).
• preposition On the opposite side of (something that lies between two points of interest).
• preposition southern US, African American Vernacular On the opposite side, relative to something that lies between, from (a point of interest).
• preposition From one side to the other within (a space being traversed).
• preposition At or near the far end of (a space).
• preposition Spanning.
• preposition Throughout,
• preposition So as to intersect or pass through or over at an angle.
• adverb From one side to the other.
• adverb On the other side.
• adverb In a particular direction.
• adverb crosswords Horizontally.
• noun crosswords A clue whose solution runs horizontally in the grid.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adverb to the opposite side
• adverb transversely