period period /ˈpɪriːəd/

noun

1. () An amount of time  ( time span , time period , period of time , period )
   an amount of time
    A time period of 30 years
   a time period of 30 years
    Hastened the period of time of his recovery
   hastened the period of time of his recovery
    Picasso's blue period
   Picasso's blue period
   
2. () The interval taken to complete one cycle of a regularly repeating phenomenon  ( period )
   the interval taken to complete one cycle of a regularly repeating phenomenon
   
3. A punctuation mark (.) placed at the end of a declarative sentence to indicate a full stop or after abbreviations  ( full point [British] , full stop , period , point , stop )
   a punctuation mark (.) placed at the end of a declarative sentence to indicate a full stop or after abbreviations
    In England they call a period a stop
   in England they call a period a stop
   
4. The monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause  ( catamenia , flow , menses , menstruation , menstruum , period )
   the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause
    The women were sickly and subject to excessive menstruation
   the women were sickly and subject to excessive menstruation
    A woman does not take the gout unless her menses be stopped
   a woman does not take the gout unless her menses be stopped
    The semen begins to appear in males and to be emitted at the same time of life that the catamenia begin to flow in females
   the semen begins to appear in males and to be emitted at the same time of life that the catamenia begin to flow in females
   
5. The end or completion of something  ( period )
   the end or completion of something
    Death put a period to his endeavors
   death put a period to his endeavors
    A change soon put a period to my tranquility
   a change soon put a period to my tranquility
   
6. A unit of geological time during which a system of rocks formed  ( geological period , period )
   a unit of geological time during which a system of rocks formed
    Ganoid fishes swarmed during the earlier geological periods
   ganoid fishes swarmed during the earlier geological periods
   
7. (ice hockey) one of three divisions into which play is divided in hockey games  ( period )
   (ice hockey) one of three divisions into which play is divided in hockey games