Definition: A central point or focal area, often used to refer to the navel or a symbolic center.

Example: In ancient Greece, the omphalos was considered the center of the world.

Definition: A strong and violent attack or a sudden and overwhelming amount of something.

Example: The city faced an onslaught of heavy rain that caused flooding.

Definition: A specific calendar used by the Roman Catholic Church that outlines the Mass and office to be celebrated on each day of the year, including a list of offices and feasts.

Example: The priest referred to the ordo to plan the services for the upcoming week.

Definition: A flag or banner that represents a cause or ideal, often used to inspire courage or devotion.

Example: The oriflamme flew high above the battlefield, rallying the soldiers to fight bravely.

Definition: The starting point or source of something, where it comes from or begins.

Example: The origin of the river is in the mountains.

Definition: At the beginning or in the first place; referring to the first form or version of something.

Example: Originally, the book was published in 1995 before being revised in 2005.

Definition: A place or container where the bones of dead people are kept.

Example: The ancient ossuary was discovered during the archaeological dig.

Definition: A person who is responsible for opening and closing the doors of a church, often serving as a doorkeeper.

Example: The ostiary welcomed the guests as they entered the church for the ceremony.

Definition: A piece of pottery that has writing on it, often used in ancient times for voting or recording information.

Example: The archaeologists discovered an ostracon with ancient Greek inscriptions.

Definition: A piece of pottery or stone used in ancient times, often for writing or voting.

Example: In ancient Greece, citizens would write names on an ostrakon to vote for banishment.