square sail square sail /skwɛr seɪl/

noun

1. A four-sided sail set beneath a horizontal yard suspended at the middle from a mast  ( square sail )
   a four-sided sail set beneath a horizontal yard suspended at the middle from a mast
    Pirate ships often featured the iconic square sail.
   Pirate ships often featured the iconic square sail.
   
   

 Jarvik heart Jarvik heart /ˈdʒɑːrvɪk hɑːrt/

noun

1. A kind of artificial heart that has been used with some success  ( Jarvik artificial heart , Jarvik heart )
   a kind of artificial heart that has been used with some success
   
   

 by-catch by-catch /ˈbaɪˌkætʃ/

noun

1. Unwanted marine creatures that are caught in the nets while fishing for another species  ( by-catch , bycatch )
   unwanted marine creatures that are caught in the nets while fishing for another species
    Thousands of dolphins and porpoises and whales are killed as part of the by-catch each year
   thousands of dolphins and porpoises and whales are killed as part of the by-catch each year
   
   

 epiphany epiphany /ɪˈpɪfəni/

noun

1. () A divine manifestation  ( epiphany )
   a divine manifestation
   

 Epiphany

1. Twelve days after Christmas; celebrates the visit of the three wise men to the infant Jesus  ( Epiphany , Epiphany of Our Lord , January 6 , Three Kings' Day , Twelfth day )
   twelve days after Christmas; celebrates the visit of the three wise men to the infant Jesus