List: rare term

rare term  noun  noun (generic) 

• larger whales of family Delphinidae (esp. the pilot whale or blackfish)

rare term  noun  noun (generic)  noun taking the genitive case particle の  adjective (generic) 

• monogamy

rare term  noun  noun (generic) 

• polygamy

rare term  noun  noun (generic) 

• polyandry

gairaigo  waseigo  English origin  rare term  noun  noun (generic) 

• bathroom, washroom, lavatory

rare term  noun  noun (generic) 

• monkey brain (eaten as a delicacy, medicine, etc.)

gairaigo  Latin origin  rare term  noun  noun (generic) 

• Piltdown man (manufactured fossil of a fraudulent ape-human missing link, Eoanthropus dawsoni)

rare term  noun  noun (generic) 

• subject (of a portrait or bust), a person posing for a portrait or bust
• (historically) patron, someone who commissions a Buddhist temple or work of art

rare term  noun  noun (generic) 

• periodic law

rare term  noun  noun (generic) 

• periodic table of the elements