triangle - trojúhelník (pravítko)
BrE
/'traɪæŋgl/
AmE
/'traɪæŋgl/

noun, American English - an instrument in the shape of a right-angled triangle which used in geometry to draw straight lines and angles

set square
set square - trojúhelník (pravítko)
BrE
/'set skweə/
AmE
/'set skwer/

noun, British English - an instrument in the shape of a right-angled triangle which used in geometry to draw straight lines and angles

stir-fry
stir-fry - orestovat, osmahnout, zprudka opéct (většinou maso a zeleninu)
BrE
/'stɜ:fraɪ/
AmE
/'stɜ:rfraɪ/

verb - to fry small pieces of food quickly in very hot oil while moving them around, usually in a wok pan

 
back-up - záloha (v počítači), záloha dat
BrE
/'bækʌp/
AmE
/'bækʌp/

noun - a copy of a file in your computer that you store somewhere in case something happened to the original file