Pupa

n.	1.	(Zool.) Any insect in that stage of its metamorphosis which usually immediately precedes the adult, or imago, stage.
	2.	(Zool.) A genus of air-breathing land snails having an elongated spiral shell. Coarctate pupa a pupa which is incased in the dried-up skin of the larva, as in many Diptera. Masked pupa a pupa whose limbs are bound down and partly concealed by a chitinous covering, as in Lepidoptera.

Noun

1.

pupa - an insect in the inactive stage of development (when it is not feeding) intermediate between larva and adult

chrysalis, insect, pupate