The lock (device) is the mechanical fastening device which may be utilized in a door, vehicle, safe, or more container. Normally, it may be freed by utilizing the key or combination. Watch locksmithing. The canal lock is an enclosure in the canal or river used to raise or lower a a stream level for ships and boats passing through. The lock (computer science) is the bookkeeping object associated using a piece of information that is utilized to serialize simultaneous access. Any means of holding the setting or even state, like caps lock, satellite lock. Early projectile weapons applying gunpowder such as muskets, smooth bore pistols and early rifles are classified by a ignition mechanism (known as the lock (firearm)) used to fire the weapon. These include matchlock, wheellock, flintlock, and modern percussion types. The complete piece typically consists of lock, stock, and barrel. The wrestling hold, such as the head lock. The tuft or even little bundle of hair. The position inside rugby union, numbers Four & Five. Locks come generally super tall to help getting balls in the line-out. Illustrious locks include Martin Johnson and Colin Meads.