piper piper /ˈpaɪpɝ/

noun

1. () Someone who plays the bagpipe  ( bagpiper , piper )
   someone who plays the bagpipe
   

 Piper

1. Type genus of the Piperaceae: large genus of chiefly climbing tropical shrubs  ( genus Piper , Piper )
   type genus of the Piperaceae: large genus of chiefly climbing tropical shrubs
   
   

 lemon sumac lemon sumac /ˈlɛmən suːˈmæk/

noun

1. Sweet-scented sumac of eastern America having ternate leaves and yellowish-green flowers in spikes resembling catkins followed by red hairy fruits  ( fragrant sumac , lemon sumac , Rhus aromatica )
   sweet-scented sumac of eastern America having ternate leaves and yellowish-green flowers in spikes resembling catkins followed by red hairy fruits
   
   

 systematist systematist /sɪˈstɛmətɪst/

noun

1. An organizer who puts things in order  ( orderer , systematiser [British] , systematist , systematizer , systemiser [British] , systemizer )
   an organizer who puts things in order
    Aristotle was a great orderer of ideas
   Aristotle was a great orderer of ideas
   
2. A biologist who specializes in the classification of organisms into groups on the basis of their structure and origin and behavior  ( systematist , taxonomer , taxonomist )
   a biologist who specializes in the classification of organisms into groups on the basis of their structure and origin and behavior
   
   

 demonstration demonstration /ˌdɛmənˈstreɪʃən/

noun

1. () A show or display; the act of presenting something to sight or view  ( presentment , presentation , demonstration )
   a show or display; the act of presenting something to sight or view
    The presentation of new data
   the presentation of new data
    He gave the customer a demonstration
   he gave the customer a demonstration
   
   
2. () (military) a show of military force or preparedness  ( demonstration )
   (military) a show of military force or preparedness
    He confused the enemy with feints and demonstrations
   he confused the enemy with feints and demonstrations
   
3. () A public display of group feelings (usually of a political nature)  ( manifestation , demonstration )
   a public display of group feelings (usually of a political nature)
    There were violent demonstrations against the war
   there were violent demonstrations against the war
   
   
4. () Proof by a process of argument or a series of proposition proving an asserted conclusion  ( monstrance [Archaic] , demonstration )
   proof by a process of argument or a series of proposition proving an asserted conclusion
   
5. A visual presentation showing how something works  ( demo , demonstration )
   a visual presentation showing how something works
    The lecture was accompanied by dramatic demonstrations
   the lecture was accompanied by dramatic demonstrations
    The lecturer shot off a pistol as a demonstration of the startle response
   the lecturer shot off a pistol as a demonstration of the startle response