definition of
[upwind]

[1] #1 upwind s. [weather] towards the side exposed to wind. wn

[2] #2 upwind r. [leeward] toward the wind; "they were sailing leeward". wn

[3] #3 upwind r. [against the wind, into the wind] in the direction opposite to the direction the wind is blowing; "they flew upwind". wn