BUB

An alcoholic malt liquor, especially beer.

A woman's breast.

A term of familiar address; bubba; bubby.

A young brother; a little boy; a familiar term of address for a small boy.

A baby.

Champagne; bubbly.

A spherically contained volume of air or other gas, especially one made from soapy liquid.

A small spherical cavity in a solid material.

Example: "Bubbles in window glass, or in a lens"

(by extension) anything resembling a hollow sphere.

Anything lacking firmness or solidity; a cheat or fraud; an empty project.

A period of intense speculation in a market, causing prices to rise quickly to irrational levels as the metaphorical bubble expands, and then fall even more quickly as the bubble bursts.

Example: "Dot-com bubble"

The emotional and/or physical atmosphere in which the subject is immersed.

An officer's station in a prison dormitory, affording views on all sides.

Someone who has been ‘bubbled’ or fooled; a dupe.

A small, hollow, floating bead or globe, formerly used for testing the strength of spirits.

The globule of air in the chamber of a spirit level.

A laugh.

Example: "Are you having a bubble?!"

A greek.

Any of the small magnetized areas that make up bubble memory.

The point in a poker tournament when the last player without a prize loses all their chips and leaves the game, leaving only players that are going to win prizes. (e.g., if the last remaining 9 players win prizes, then the point when the 10th player leaves the tournament)

Example: "Many players tend to play timidly (not play many hands) around the bubble, to keep their chips and last longer in the game."

A group of people who are in quarantine together.