The act of arriving or something that has arrived.

"The early arrival of the bride created a stir."

The attainment of an objective, especially as a result of effort.

"The arrival of the railway made the local tourist industry viable."

A person who has arrived.

"There has been a significant growth in illegal arrivals."

To say “arr” like a pirate.

"How do you know someone's a pirate? Because they arr."

Yes.

Used stereotypically in imitation of pirates.