अव्यय

अव्यय
नञ्+ व्यय
not seperated/seperable/diminishable
not rhrow-away-able
pull net + bird net connect
not bird-net-able
pull net (i.e. not) + spent/thrown/separated and thrown away

OR
अ + व्यय
here bird net is connected
here bird-net-able
here spent

अवि + अय
here bird + as if + as if

survived Meaning -
not spent / not spending
Imperishable, permenant