キーストーン
kiisu tōn
1. keystone
Noun
#112766
1. keystone
1. keystone combination
1. keystone combination
1. At Keystone; In Keystone
1. Keystone; Key
1. Keystone.; Polite form of "key."
1. Was a keystone.
1. Wasn't a keystone.; Wasn't the keystone.
1. If keystone; Were keystone
1. Probably a keystone.; Likely a keystone.