unveiling
noun
[ ʌnˈveɪlɪŋ ]
• the removal of a veil or covering from a new monument or work of art as part of a public ceremony.
• "the unveiling of the memorial"
unveil
verb
• remove a veil or covering from, in particular uncover (a new monument or work of art) as part of a public ceremony.
• "the Princess unveiled a plaque"