x1 is Aries [astronomical constellation/astrological sign].
From lanme (=sheep/[lamb/ewe/ram];lojban) and lu (=sheep;sumerogram). This constellation has been known as the ram/sheep since babylonian times, and later become the leading sign of the zodiac (7th century BCE). In Hellenistic astrology, the constellation of Aries is associated with the golden ram of Greek mythology that rescued Phrixos.