immunization immunization /ˌɪmjuːnəˈzeɪʃən/

noun

1. The act of making immune (especially by inoculation)  ( immunisation [British] , immunization )
   the act of making immune (especially by inoculation)
   
   

 blackjack blackjack /ˈblækˌdʒæk/

noun

1. A gambling game using cards; the object is to hold cards having a higher count than those dealt to the banker up to but not exceeding 21  ( blackjack , twenty-one , vingt-et-un )
   a gambling game using cards; the object is to hold cards having a higher count than those dealt to the banker up to but not exceeding 21
   
   
2. A flag usually bearing a white skull and crossbones on a black background; indicates a pirate ship  ( blackjack , Jolly Roger , pirate flag , black flag )
   a flag usually bearing a white skull and crossbones on a black background; indicates a pirate ship
    As they approached, they noticed the ship raised a black flag, indicating pirates.
   As they approached, they noticed the ship raised a black flag, indicating pirates.
   
   
3. [ N. American] A piece of metal covered by leather with a flexible handle; used for hitting people  ( blackjack [ N. American] , cosh [Informal, British] , sap [Informal, N. American] )
   a piece of metal covered by leather with a flexible handle; used for hitting people
   
   
4. A common scrubby deciduous tree of central and southeastern United States having dark bark and broad three-lobed (club-shaped) leaves; tends to form dense thickets  ( blackjack , blackjack oak , jack oak , Quercus marilandica )
   a common scrubby deciduous tree of central and southeastern United States having dark bark and broad three-lobed (club-shaped) leaves; tends to form dense thickets
   

verb

1. Exert pressure on someone through threats  ( blackjack , blackmail , pressure )
   exert pressure on someone through threats
   

 downslope downslope /ˈdaʊnˌsloʊp/

noun

1. A downward slope or bend  ( declension , declination , decline , declivity , descent , downslope , fall )
   a downward slope or bend
     They carefully descended the steep declivity, their steps guided by ropes and harnesses.
   They carefully descended the steep declivity, their steps guided by ropes and harnesses.
   
   

 tincture of opium tincture of opium /ˈtɪŋktʃər ʌv ˈoʊpiəm/

noun

1. Narcotic consisting of an alcohol solution of opium or any preparation in which opium is the main ingredient  ( tincture of opium , laudanum )
   narcotic consisting of an alcohol solution of opium or any preparation in which opium is the main ingredient