retractile

Tentacular -um: retractile processes on the larvae of Lepidoptera.

The tongue of some Hymenoptera also is retractile within the mouth.

In Stenus this organ is retractile, and consists of two joints.

The vermiform and retractile tongue is also a most singular organ.

The claws are not retractile, or at most semi-retractile as in the Panda.

So the retractile wings were as good as eleven years ago—you hoped.

The brownish fins were rigid as metal, the retractile claws unsheathed and cruelly curved.

And the reason for this is that a cat's claws are sharper than a dog's, and they are what are called "retractile."

These are not retractile, as in the land-snails, and their office appears to be that of sensory organs.

It will be noted that Fulgur has a comparatively long and stout proboscis, or snout, which is not retractile.