Hard 732244 225802816 2008-07-15T13:57:16Z Closedmouth 372693 Reverted edits by [[Special:Contributions/12.175.158.186|12.175.158.186]] to last version by GeorgeMillo (using [[WP:HG|Huggle]]) {{wiktionarypar|hard|hardness}} '''Hard''' or '''Hardness''' may refer to: * [[Hardness]], resistance of physical materials to change under force. * [[Hard water]] has a high mineral content. * Mathematical difficulty; see [[computational complexity theory]]. * A [[difficulty level]] in a [[video game]]. * [[Street hardness]], an attribute characterized by physical and mental toughness due to living in hostile urban environments. * [[Hard, Austria]], a town in [[Austria]]. * Slang for erection of the penis when sexually excited or aroused. See [[Erection]] * [[Hard]], When you do something very strongly; with a lot of emphasis * [[Hard (Brainpower album)|Hard]], a music album by [[Brainpower]] * [[Hard (Gang of Four album)|Hard]], an album by [[Gang of Four (band)|Gang of Four]] {{dab}} [[cs:Tvrdost]] [[de:Hard (Begriffsklärung)]] [[fr:Hard]] [[nl:Hard]] [[no:Hardhet]] [[pl:Twardość]]