across:  English originally borrowed across, or the idea for it, from Old French. French had the phrase à croix or en croix, literally ‘at or in cross’, that is, ‘in the form of a cross’ or ‘transversely’. This was borrowed into Middle English as a creoix or o(n) croice, and it was not until the 15th century that versions based on the native English form of the word cross began to appear: in cross, on cross, and the eventual winner, across. => cross
early 14c., acros, earlier a-croiz (c. 1300), from Anglo-French an cros "in a crossed position," literally "on cross" (see cross (n.)). Prepositional meaning "from one side to another" is first recorded 1590s; meaning "on the other side (as a result of crossing)" is from 1750. Phrase across the board originally is from horse-racing, in reference to a bet of the same amount of money on a horse to win, place, or show.
1. They stumble across a ghost town inhabited by a rascally gold prospector.
2. She knelt and brushed her lips softly across Michael's cheek.
3. Lucy had strung a banner across the wall saying "Welcome Home Daddy".
4. Nuclear weapons plants across the country are heavily contaminated with toxic wastes.
5. Representatives from across the horse industry will attend the meeting.