weight - závaží (k vážení či zatížení), činka, kotouč činky

noun - a piece of metal that weighs a particular amount used to measure how heavy something is or to weigh something down; it is also lifted as a sport

lightning conductor - hromosvod

noun, British English - a metal rod on top of a building which is connected to the ground with a wire, it is used to protect the building when there is lightning

lightning rod - hromosvod

noun, American English - a metal rod on top of a building which is connected to the ground with a wire, it is used to protect the building when there is lightning

printing press - tiskařský lis, tiskařský stroj

noun - a machine or device used to print text or images onto paper or other materials by pressing inked type or plates against them

relay - relé

noun, technical - a device that receives and passes on a signal or an electric current, often used to control a larger electrical system or circuit

 

semiconductor - polovodič

noun - a substance or material that allows electricity to pass through it under some conditions but not under others, used especially in electronic devices

valerian - kozlík, kozlík lékařský

noun, technical - a plant witch clusters of small white and pink flowers whose root is used in medicine, often to help people relax or sleep

 

mayday - pomoc, stav nouze

noun - a radio distress signal used by ships and aircraft to signal a life-threatening emergency, derived from the French phrase m'aider (help me)

dumbbell - činka, jednoruční činka, jednoručka

noun - a short bar with a weight or a set of weights at each end that is used to make your arm muscles stronger

chopstick - hůlka (na jídlo), jídelní hůlka

noun - on of the two long thin sticks that are used in China, Japan etc. to eat with (instead of a knife and fork)

 

pergola - pergola

noun - a simple wooden structure that climbing plants grow over and through, sometimes used as shade from the sun for people to sit under

 

x-rays - rentgen

noun - beams of invisible light that can go through solid things, it is used e.g. in medicine to take pictures of broken bones etc.

 

chromium - chrom

noun - (the chemical element of atomic number 24) a blue-white metal resistant to corrosion, it is used in stainless steel and other alloys

 

fluorine - fluor

noun - (the chemical element of atomic number 9) a pale yellow poisonous gas, some of its compounds are used in toothpaste to prevent cavities

 

euphemism - eufemismus, eufemizmus

noun - a phrase or a word that is used to replace a word that might offend someone or make them feel unpleasant or embarrassed