nanorover
n.β Β«Would the rover descend into the crater or just peer over the edge? Would it launch a much smaller tethered roverβa “nanorover” in the current Esa phraseologyβor fire harpoons down into the dark ice?Β» ββEuropeβs lunar vision blossoms” by Richard Black in Vienna BBC News Apr. 10, 2005. (source: Double-Tongued Dictionary)