(sports) An undefended goal. / An opportunity that is readily available.

(idiomatic) With enthusiasm, as if embracing

Of or pertaining to work that is done from home, especially via the Internet.

Something that is in its beta stage, or being tested.

Pertaining to a product sold by merchants at a discount, because the item was returned but found not to be defective.

plural of open problem

A problem that has been posed in a field of study such as mathematics or theoretical computer science, but whose answer is not yet known.

A music, poetry, or comedy stage platform with open invitation, that is, where anyone is invited to perform.

(computing) A proxy server that may be accessed by any Internet user.

(business, finance) A trading method whereby traders gather in person, often in a pit, and call out to all their desire to buy or sell a quantity at a given price, transactions being consummated when two parties can agree on a price. Most frequently used in securities markets.