Related Clues:

• Brother (Italian)
• Rotation of planetary sphere is relative
• Hipster's chum
• "Rob" anagram
• Slangy pal
• Brother (but not a bro)
• Religious title
• What to call some brothers
• Man cave invitee
• Pal, casually
• Frat guy
• Relative of sis
• Pop's son
• Old buddy, old pal
• Fellow likely to say 'crushing it'