to answer back.
also back-talk, “impertinent retort,” 1858, originally often used in literary attempts at low Irish idiom, from back (adj.) + talk (n.).
backtick back quote
to return over the same course or route. to withdraw from an undertaking, position, etc.; reverse a policy. Contemporary Examples backtracking a bit, but the first time I saw you was as Tim Whatley on Seinfeld, who converted to Judaism for the jokes. Bryan Cranston on Walter White’s Future, Directing ‘Better Call Saul,’ and Hillary […]
- Backup domain controller
backup domain controller networking (BDC) A server in a network of Microsoft Windows computers that maintains a copy of the SAM database and handles access requests that the Primary Domain Controller (PDC) doesn’t respond to. There may be zero or more BDCs in a network. They increase reliability and reduce load on the PDC. (2006-09-18)
- Backup light
a light at the rear of a motor vehicle that lights as a warning to those behind.