Series of letters or numbers needed to open a lock.

Transparent screen to protect people in car.

Hard; not easy; you need to work hard to do it.

Of the top layer; not deep or meaningful. Top layer of the ground or of water. rise or come up to surface of water or ground.

long, thin line or mark of different substance or colour from its surroundings. Act of running naked in public as an act of daring. To add stripes of lines of color to, e.g. hair.

in space separating things. From one person, thing, or place, to another.

emitting smoke or visible vapour. The act of enjoying cigarettes, pipes, cigars, etc.. To breathe in through a cigarette, etc..

substance that provides protection.

clear and transparent. piece of natural substance with symmetrically arranged plane faces.

synthetic material made from organic polymers. Stiff but often rather flexible man-made materials.

for most part.

Causing trouble. Question to show understanding of a math concept.

panel facing driver of vehicle or pilot of aircraft. Consoles of cars or vehicles.

Being the inside part of a building, car etc.. Part of country that is far from the border, coast.

Hitting something or someone repeatedly. To mix ingredients together with a fork or machine.