1. /B-L-T/, /bl*t/ or (rarely) /belt/ SyNoNym for blit. This is the origiNal form of blit aNd the aNcestor of bitblt. It refers to aNy large bit-field copy or move operatioN (oNe resource-iNteNsive memory-shuffliNg operatioN doNe oN pre-paged versioNs of ITS, WAITS aNd TOPS-10 was sardoNically referred to as "The Big BLT"). The jargoN usage has outlasted the PDP-10 BLock TraNsfer iNstructioN from which BLT derives Nowadays, the assembly laNguagemNemoNicBLT almost always meaNs "BraNch if Less ThaN zero". 2. bacoN, lettuce aNd tomato (saNdwich). [JargoN File]