till till /ˈtɪl/

conjunction

1. () Up to a time that  ( till , until )
   up to a time that
   

noun

1. A strongbox for holding cash  ( cashbox , money box , till )
   a strongbox for holding cash
    The bartender counted the cash in the till at the end of the night
   The bartender counted the cash in the till at the end of the night
   
   
2. A treasury for government funds  ( public treasury , till , trough )
   a treasury for government funds
   
3. Unstratified soil deposited by a glacier; consists of sand and clay and gravel and boulders mixed together  ( boulder clay , till )
   unstratified soil deposited by a glacier; consists of sand and clay and gravel and boulders mixed together
   
   

preposition

1. () Up to a specific point in time.  ( till , until )
   Up to a specific point in time.
   

verb

1. (farming) work land as by ploughing, harrowing, and manuring, in order to make it ready for cultivation  ( till )
   (farming) work land as by ploughing, harrowing, and manuring, in order to make it ready for cultivation
    Till the soil
   till the soil
   

 reciprocating engine reciprocating engine /rɪˈsɪprəkeɪtɪŋ ˈɛndʒɪn/

noun

1. An internal-combustion engine in which the crankshaft is turned by pistons moving up and down in cylinders  ( reciprocating engine )
   an internal-combustion engine in which the crankshaft is turned by pistons moving up and down in cylinders
    Automobiles traditionally used the reciprocating engine, where pistons move up and down.
   Automobiles traditionally used the reciprocating engine, where pistons move up and down.
   
   

 black hole black hole /blæk hoʊl/

noun

1. () A region of space resulting from the collapse of a star; extremely high gravitational field  ( black hole )
   a region of space resulting from the collapse of a star; extremely high gravitational field
    A black hole is a region of space where gravity is so strong that nothing, not even light, can escape
   A black hole is a region of space where gravity is so strong that nothing, not even light, can escape
   
   

 illustrator illustrator /ˈɪləˌstreɪtɝ/

noun

1. () An artist who makes illustrations (for books, magazines or advertisements etc.)  ( illustrator )
   an artist who makes illustrations (for books, magazines or advertisements etc.)
    The book's success was partly due to its talented illustrator.
   The book's success was partly due to its talented illustrator.