Toward shelter (7)
(Other definitions for leeward that I've seen before include "On sice turned away from wind" , "The way the wind blows" , "Quarter towards which the wind blows" , "side of sailors" , "Draw eel (anag.)" .)
'toward shelter' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for alee that I've seen before include "On the sheltered side (of a ship)" , "On ship's sheltered side" , "Nautical term" .)