Both Uses of

windward
in
Treasure Island

If you would on'y lay your course, and a p'int to windward, you would ride in carriages, you would.†
Chpt 11 *

windward = the direction or side from which the wind is coming

They had lit a fire fit to roast an ox, and it was now grown so hot that they could only approach it from the windward, and even there not without precaution.†
Chpt 31

Definition:

the direction or side from which the wind is coming

When someone refers to a "north wind", they are saying that "windward" is north.