= B =
boat anchor n.
[common; from ham radio] 1. Like doorstop
but more severe; implies that the offending hardware is
irreversibly dead or useless. "That was a working motherboard
once. One lightning strike later, instant boat anchor!" 2. A
person who just takes up space. 3. Obsolete but still
working hardware, especially when used of an old S100-bus hobbyist
system; originally a term of annoyance, but became more and more
affectionate as the hardware became more and more obsolete.
--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.