← Back to browsekeystonenoun#28,738Translationsキーストーンキーストーン要石かなめいしかなめかなめくさび石くさびいしEnglish definitiona central cohesive source of support and stabilityExamplesEnvironmentalists are opposing the Keystone XL pipeline.Similar wordskeystonesgreystoneketonekeysstonekeystroke← foamingbays →