We found one dictionary that defines the word to leewards:

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1. to leewards: Vocabulary.com

(Note: See to_leeward as well.)

Definitions from WordNet (to leeward) ▸ noun:  the side sheltered from the wind ▸ Also see to_leeward ▸ Words similar to to leewards ▸ Usage examples for to leewards ▸ Idioms related to to leewards ▸ Wikipedia articles (New!) ▸ Words that often appear near to leewards ▸ Rhymes of to leewards ▸ Invented words related to to leewards