weeds n. 1. Refers to development projects or algorithms that have no possible relevance or practical application. Comes from `off in the weeds'. Used in phrases like "lexical analysis for microcode is serious weeds...." 2. At CDC/ETA before its demise, the phrase `go off in the weeds' was equivalent to IBM's {branch toFishkill} and mainstream hackerdom's {jump off into never-never land}.