backstairs backstairs /ˈbækˌstɛrz/

adjective

1. Secret and sly or sordid  ( backstair , backstairs , furtive )
   secret and sly or sordid
    Backstairs gossip
   backstairs gossip
    His low backstairs cunning
   his low backstairs cunning
    Backstairs intimacies
   backstairs intimacies
    Furtive behavior
   furtive behavior
   

noun

1. A second staircase at the rear of a building  ( backstairs )
   a second staircase at the rear of a building
    The servants typically used the backstairs to move between floors unnoticed.
   The servants typically used the backstairs to move between floors unnoticed.
   
   

 tooth tooth /ˈtuːθ/

noun

1. () Hard bonelike structures in the jaws of vertebrates; used for biting and chewing or for attack and defense  ( tooth )
   hard bonelike structures in the jaws of vertebrates; used for biting and chewing or for attack and defense
    Brushing and flossing regularly can help keep your teeth healthy
   Brushing and flossing regularly can help keep your teeth healthy
   
   
2. () Something resembling the tooth of an animal  ( tooth )
   something resembling the tooth of an animal
   
3. () A means of enforcement  ( tooth )
   a means of enforcement
    The treaty had no teeth in it
   the treaty had no teeth in it
   
4. () Toothlike structure in invertebrates found in the mouth or alimentary canal or on a shell  ( tooth )
   toothlike structure in invertebrates found in the mouth or alimentary canal or on a shell
   
5. One of a number of uniform projections on a gear  ( tooth )
   one of a number of uniform projections on a gear
    The gear malfunctioned because one of its teeth was chipped.
   The gear malfunctioned because one of its teeth was chipped.
   
   

 dry dock dry dock /draɪ dɒk/

noun

1. A large dock from which water can be pumped out; used for building ships or for repairing a ship below its waterline  ( dry dock , drydock , graving dock )
   a large dock from which water can be pumped out; used for building ships or for repairing a ship below its waterline
    The ship was taken to the dry dock for maintenance
   The ship was taken to the dry dock for maintenance
   
   

 Odd Hassel Odd Hassel /ɒd ˈhæsəl/

noun

1. Norwegian chemist noted for his research on organic molecules (1897-1981)  ( Hassel , Odd Hassel )
   Norwegian chemist noted for his research on organic molecules (1897-1981)