Cancerhalf-sibling Share Tweet A person’s brother or sister who has one parent in common.( haf-SIB-ling )Source: NCI Dictionary of Cancer TermsSearch the Glossary of Medical Terms Previous: Haldol Next: hallucination NewsletterSign up for the QuackTrack.org newsletter below! Click to commentLeave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment *Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Δ QuackTrack on TwitterTweets by QuackTrack_org Trending Posts