life preserver life preserver /laɪf prɪˈsɜːrvər/

noun

1. Rescue equipment consisting of a buoyant belt or jacket to keep a person from drowning  ( flotation device , life preserver , preserver )
   rescue equipment consisting of a buoyant belt or jacket to keep a person from drowning
   
   

 Tanzanian shilling Tanzanian shilling /tænˈzeɪniən ˈʃɪlɪŋ/

noun

1. The basic unit of money in Tanzania; equal to 100 cents  ( shilling , Tanzanian shilling )
   the basic unit of money in Tanzania; equal to 100 cents
   
   

 detergent detergent /dɪˈtɝːdʒənt/

adjective

1. Having cleansing power  ( detergent , detersive )
   having cleansing power
   

noun

1. () A surface-active chemical widely used in industry and laundering  ( detergent )
   a surface-active chemical widely used in industry and laundering
     The detergent effectively removes stains from clothes.
   The detergent effectively removes stains from clothes.
   
   
2. () A cleansing agent that differs from soap but can also emulsify oils and hold dirt in suspension  ( detergent )
   a cleansing agent that differs from soap but can also emulsify oils and hold dirt in suspension
    She added a spoonful of detergent to the washing machine.
   She added a spoonful of detergent to the washing machine.
   
   

 barrier reef barrier reef /ˈbærɪər riːf/

noun

1. A long coral reef near and parallel to the shore  ( barrier reef )
   a long coral reef near and parallel to the shore
    The barrier reef protected the shoreline from the rough waves of the open sea.
   The barrier reef protected the shoreline from the rough waves of the open sea.