Dmitri Shostakovich Dmitri Shostakovich /ˈdmɪtri ʃɒstəˈkɔːvɪtʃ/

noun

1. Russian composer best known for his fifteen symphonies (1906-1975)  ( Dmitri Dmitrievich Shostakovich , Dmitri Shostakovich , Shostakovich )
   Russian composer best known for his fifteen symphonies (1906-1975)
   
   

 nonmetal nonmetal /ˈnɒnˈmɛtəl/

adjective

1. Not containing, resembling or characteristic of a metal  ( nonmetal , nonmetallic )
   not containing, resembling or characteristic of a metal
    Nonmetallic elements
   nonmetallic elements
   

noun

1. A chemical element lacking typical metallic properties  ( nonmetal )
   a chemical element lacking typical metallic properties
    Oxygen is an example of a nonmetal, as it doesn't exhibit metallic properties.
   Oxygen is an example of a nonmetal, as it doesn't exhibit metallic properties.
   
   

 hypotenuse hypotenuse /haɪˈpɒtəˌnjuːs/

noun

1. The side of a right triangle opposite the right angle  ( hypotenuse )
   the side of a right triangle opposite the right angle
    The hypotenuse of the right-angled triangle was 5cm
   The hypotenuse of the right-angled triangle was 5cm
   
   

 sickle feather sickle feather /ˈsɪkəl ˈfɛðər/

noun

1. One of the long curved tail feathers of a rooster  ( sickle feather )
   one of the long curved tail feathers of a rooster
    The rooster flaunted his vibrant sickle feathers as he strutted around the farm.
   The rooster flaunted his vibrant sickle feathers as he strutted around the farm.