extension - linka (tel.), klapka (tel.)
BrE
/ɪk'stenʃn/
AmE
/ɪk'stenʃn/

noun - one of the telephones in a large building which is connected to the central one

lightning
lightning - blesk, blesky
BrE
/'laɪtnɪŋ/
AmE
/'laɪtnɪŋ/

noun - the flash of light you can see in the sky when there is a storm

kidney
kidney - ledvina
BrE
/'kɪdni/
AmE
/'kɪdni/

noun - one of the two organs in your body that separate waste liquid from the blood

ribcage
ribcage - hrudník, hrudní koš
BrE
/'rɪbkeɪdʒ/
AmE
/'rɪbkeɪdʒ/

noun - the set of bones in your chest that protect the heart and other inner organs

rainbow
rainbow - duha
BrE
/'reɪnbəʊ/
AmE
/'reɪnboʊ/

noun - the arch of different colours that sometimes forms in the sky after it has rained

rain
rain - pršet
BrE
/'reɪn/
AmE
/'reɪn/

verb - (of water) to fall from the sky in the form of little drops of water

reflection
reflection - odraz, obraz
BrE
/rɪ'flekʃn/
AmE
/rɪ'flekʃn/

noun - an image that you can see in the mirror, or on the surface of water

dashboard
dashboard - palubní deska (auta)
BrE
/'dæʃbɔ:d/
AmE
/'dæʃbɔ:rd/

noun - the board in front of a car with the steering wheel, speedometer and other controls

tidal wave
tidal wave - přílivová vlna, tsunami
BrE
/'taɪdl weɪv/
AmE
/'taɪdl weɪv/

noun - a huge wave in the sea or ocean that destroys houses etc. on the coast

surname
surname - příjmení
BrE
/'sɜ:neɪm/
AmE
/'sɜ:rneɪm/

noun - the name you have in common with other members of the family, a family name

Santa Claus
Santa Claus - Santa Claus
BrE
/'sæntəˌklɔ:z/
AmE
/'sæntəˌklɔ:z/

noun - the person who is believed to bring Christmas presents to children (especially in the USA)

Santa
Santa - Santa
BrE
/'sæntə/
AmE
/'sænt̬ə/

noun - the person who is believed to bring Christmas presents to children (especially in the USA)

Father Christmas
Father Christmas - Otec Vánoc, Ježíšek, Santa
BrE
/ˌfɑ:ðə'krɪsməs/
AmE
/ˌfɑ:ðər'krɪsməs/

noun, British English - the person who is believed to bring Christmas presents to children (especially in the UK)

tsunami
tsunami - přílivová vlna, tsunami
BrE
/tsu:'nɑ:mi/
AmE
/tsu:'nɑ:mi/

noun - a huge wave in the sea or ocean that destroys houses etc. on the coast

 
optimism - optimismus
BrE
/'ɒptɪmɪzəm/
AmE
/'ɑ:ptəmɪzəm/

noun - the ability to see the good side of everything; a belief in a good end