base

Very valuable because it is rare or expensive

A gas or metal that does not easily react with other things

To make the first real progress in work or a relationship

Close to having sex with someone you are dating

A funny phrase people use online to say they have won

To turn completely upside down while falling

A place at the start of a trip for climbing or hiking where people rest and keep supplies

A military place where people keep, fix, and fly planes and helicopters

A group of people who strongly support someone like a singer or sports team

The main office where a company or group does its work

The second of four bases a runner touches when running to score

The first of four points on the field that a runner must touch to score

A white square on the field at the third corner that a runner must touch to score

The total value of income, goods, or sales a government can collect money from

A place where soldiers live, train, and work

A player who stands near the third corner and stops balls hit there

A place where people plan and start activities like a military camp or company office

A hit that lets the batter reach base safely, not because of an error or fielder's choice

A collection of information about a subject that helps people or companies find answers

A player who stands at first base to catch throws and get runners out

An early step toward reaching a goal

A player who stands near second base and catches or stops ground balls

A stage in a relationship when people touch above the waist

Two matching chemical parts in DNA or RNA that join the two strands, for example adenine with thymine

A place where the navy keeps, fixes, and supplies its ships

A flat rubber square that the batter stands beside and runners touch to score

A key interest rate set by the Bank of England that other loan rates follow

The number of a company's products that people use now, like devices or software

A batting team player on base or running to reach a base

A common metal like iron or copper that is not as valuable as gold

An advance to first base after a batter receives four pitches outside the strike zone

A military place where people keep, fix, and send rockets into the sky

A type of paint that uses water instead of oil

A baseball play when the batter reaches second base safely

The amount of acids and bases in the body that keeps fluids at the right pH

A baseball hit that lets the batter reach third base safely

A children's game where two teams try to tag players from the other team and bring them to their base

A balance of acids and bases in the body that keeps it working

A chemical that changes color to show if a liquid is acidic or basic

A metal made mostly of copper mixed with other metals like tin or zinc

A metal made mainly of nickel that resists very high heat and chemical damage

A person who manages supplies and daily tasks at a base, like transport and housing

A slang phrase for having sex as the final step in dating

A water-based paint that stays flexible, lasts a long time and resists moisture