UPWIND

adj. in or toward the direction from which the wind is blowing

adv. against the direction of the wind; with the direction of the wind

Windward is the direction from which the wind is blowing at the time in question. The side of a ship which is towards the windward is the weather side. If the vessel is heeling under the pressure of the wind, this will be the "higher side"Leeward is the direction downwind from the point of reference. The side of the ship towards the leeward is its lee side. If the vessel is heeling under the pressure of the wind, this will be the "lower side".
See more at Wikipedia.org...

Adjective
1. towards the side exposed to wind
(synonym) weather(a)
(similar) windward
Adverb
1. toward the wind; "they were sailing leeward"
(synonym) leeward
(antonym) windward, downwind
2. in the direction opposite to the direction the wind is blowing; "they flew upwind"
(synonym) against the wind, into the wind
(antonym) downwind, with the wind

(v. t.)
To wind up.
  

      windup