entrance-n; 4 Senses

Sense Number 1: a physical point of access, e.g., door, opening

Commentary: ENTRANCE[+structure][+physical][+access]
NOTE: refers to a region or structure to pass through.

That entrance to the freeway was closed this morning during rush hour.
Guards stood at the entrance of the palace.
The back entrance to the building is locked after 6 PM.

PropBank: entrance.01
WordNet 3.0 Sense Numbers: 1

Sense Number 2: the state of admission to something

Commentary: ENTRANCE[+state][+admission]
NOTE: often used in phrase 'gain entrance'

Many nations are uneasy about their entrance into the nuclear club.
John passed his entrance exams to medical school.
The burglar attempted to gain entrance through the kitchen window. (he admitted himself)
About fifty people gained entrance to the rock concert without tickets.

PropBank: entrance.01
WordNet 0.0 Sense Numbers: 1

Sense Number 3: the act of entering

Commentary: ENTRANCE[+action][+movement][+appearance]
NOTE: implies physically appearing somewhere

Sally loves to make a grand entrance at a party.
His final entrance in the play is during the first scene of Act 3.
Passengers were concerned at the entrance of two bomb-sniffing dogs onto the plane.

PropBank: entrance.01
WordNet 3.0 Sense Numbers: 2, 3

Sense Number 4: the temporal beginning of a musical work

Commentary: ENTRANCE[+location][+temporal][+beginning][+musical]

The tenor missed his entrance on the fifth measure.
It's a difficult pianissimo violin entrance.

PropBank: NM
WordNet 0.0 Sense Numbers: 4