pharos pharos /ˈfɛˌroʊz/

noun

1. [Archaic] A tower with a light that gives warning of shoals to passing ships  ( beacon , lighthouse , pharos [Archaic] , beacon light )
   a tower with a light that gives warning of shoals to passing ships
    The lighthouse guided the ships safely into the harbour
   The lighthouse guided the ships safely into the harbour
   
   

 Sparta Sparta /ˈspɑːrtɑː/

noun

1. An ancient Greek city famous for military prowess; the dominant city of the Peloponnesus prior to the 4th century BC  ( Sparta )
   an ancient Greek city famous for military prowess; the dominant city of the Peloponnesus prior to the 4th century BC
   
   

 involution involution /ˌɪnvəˈluːʃən/

noun

1. The action of enfolding something  ( enfolding , involution )
   the action of enfolding something
   
2. [Archaic] The process of raising a quantity to some assigned power  ( exponentiation , involution [Archaic] )
   the process of raising a quantity to some assigned power
   
   
3. The act of sharing in the activities of a group  ( engagement , involution , involvement , participation )
   the act of sharing in the activities of a group
    The teacher tried to increase his students' engagement in class activities
   the teacher tried to increase his students' engagement in class activities
   
4. Marked by elaborately complex detail  ( elaborateness , elaboration , intricacy , involution )
   marked by elaborately complex detail
   
5. A long and intricate and complicated grammatical construction  ( involution )
   a long and intricate and complicated grammatical construction
   
6. Reduction in size of an organ or part (as in the return of the uterus to normal size after childbirth)  ( involution )
   reduction in size of an organ or part (as in the return of the uterus to normal size after childbirth)
   

 brooch brooch /ˈbroʊtʃ/

noun

1. A decorative pin worn by women  ( breastpin , broach , brooch )
   a decorative pin worn by women
    She pinned a vintage brooch to her blazer
   She pinned a vintage brooch to her blazer
   
   

verb

1. Fasten with or as if with a brooch  ( brooch , clasp )
   fasten with or as if with a brooch