The term 'Chico Brother' refers to the four Marx Brothers, a famous comedy act from the early 20th century. Harpo (5 letters) was the mute brother who played the harp and was known for his physical comedy. Marx (4 letters) was the ELDEST brother and the leader of the group, known for his wit and sarcasm. ELDEST (6 letters) is an adjective used to describe Marx as the oldest of the four brothers. ADIOS (5 letters) is a Spanish phrase meaning goodbye, which was often used by Chico, the youngest brother, in his comedic routines.