What Tupperware containers do, helpfully (4)
I believe the answer is:
nest
(Other definitions for nest that I've seen before include "Rook's residence?" , "Den" , "Home of twigs, perhaps" , "Home to a bird" , "Shelter in which to lay eggs" .)
I believe the answer is:
nest
(Other definitions for nest that I've seen before include "Rook's residence?" , "Den" , "Home of twigs, perhaps" , "Home to a bird" , "Shelter in which to lay eggs" .)