oasisEnglishOxford American Thesaurusoasis noun 1 the oasis of Bahriyah is over 200 miles from Cairo: watering hole, watering place, water hole, spring; Australian gnamma, claypan. 2 a miniature woodland that offers a cool oasis in a hot summer: refuge, haven, safe haven, retreat, sanctuary, sanctum, shelter, resting place, hiding place, harbor, asylum, hideaway, hideout.