1. The first performance (as of a theatrical production)
   - opening, opening night

Type of: start

• portal hypertension
• portal site
• portal system
• portal tomb
• portal vein
• portamento
• portative
• portcullis
• Porte
• porte-cochère
• portend
• portent
• portentous
• portentously
• porter
• porter's beer
• porterage
• porterhouse
• porterhouse steak
• portfolio
• porthole
• Portia
• portia tree
• portico
• porticoed