the.com/best man

means The groom's chosen attendant at a wedding, tasked with practical support, a speech, and keeping the rings safe until the vows need them.

from The phrase is old, but its favorite origin story is folk etymology to treat warily: that it comes from marriage-by-capture, where a man brought his strongest, most trustworthy friend to help abduct a bride and fight off her kinsmen — literally the 'best man' for that violent job. It's a vivid tale, but there's no solid historical evidence behind it. What's better documented is that 'best man' simply meant the groom's best-qualified friend or supporter, a sense recorded by the 19th century, with the role gradually formalizing into the speech-giving, ring-bearing duty known today.