In aviation and engineering circles,
罗罗 is the affectionate industry shorthand for
罗尔斯·
罗伊斯 (Rolls-Royce) — particularly the engine maker (Rolls-Royce plc, separate from the cars). Outside that domain,
罗罗 is a generic doubled-character pet name for pets, kids, or close friends, just like
玲玲,
莉莉. Older texts also list it as a literary onomatopoeia and as a former name for the
彝 (Yi) ethnic group.
