प्लु

प्लुङ् = प ल उ ङ
leg+sand outward outside/periphery
do (उ as स्वर वीभक्त) leg+sand peripheral. = disconnect leg and sand = swim

धातु अर्थ
at गति = at catching live/moving fish
Object (Llive that/floating) = act of catching live that, live that itself, doer of live