1.   A final outer plastic sheath completes the wire.

2.   A large piece of aluminum skin, the outer sheath of a midsection of the airplane, was also lifted Tuesday and parts from a third engine were spotted.

3.   Like a scallion, which it resembles slightly, lemon grass has an outer sheath that must be removed before chopping.

4.   They can be cooked without peeling, because their outer sheaths are so tender, and they cook so much faster, which is an asset for roasting.