entrance
noun
uk/ˈentrəns/ us [ S ] COMMERCE
a situation in which a company sells a product or service in a particular place or to a particular group of customers for the first time:
Analysts say the investment could prove to be a shrewd entrance into a largely unexploited market.
[ U ]
the right to enter a place:
allow/refuse (sb) entrance The management reserve the right to refuse entrance.