she weave a burial shroud, but never completes it
It shows that Penelope is trying to hold something back, because she is obviously postponing talking to the suitors who want to marry her. It shows her cunning in delaying the suitors, as well as her...
A shroud for Laertes, her father-in-law.
Penelope, to avoid finishing the funeral shroud, unravels it every night until she is caught.
every night she unravels what she has weaved during the day