[From the mnemonic for the PDP-11 `SWAp Byte'
instruction, as immortalized in the
conv=swab (see dd)] 1. vt. To solve the NUXI problem by swapping bytes in a file. 2. n. The program in V7 Unix
used to perform this action, or anything functionally equivalent to
it. See also big-endian, little-endian,