/swob/ The PDP-11 swap byte instruction mnemonic, as immortalised in the dd option "conv=swab". 1. To solve the NUXI problem by swapping bytes in a file. 2. The program in V7 Unix used to perform this action, or anything functionally equivalent to IT. See also big-endian, lITtle-endian, middle-endian, bytesexual. [Jargon File]