"wing tips" can be substituted with a few different synonyms depending on context and specificity. For example, "wingtips" might refer to a type of men's dress shoe with a pointed extension at the toe (also called "brogues" or "wingtip brogues"). In aviation, "wing tips" refer to the outermost end of the wings, where lift and drag are affected. In this case, synonyms could include "wing ends," "wing edges," or "wing flaps." In nature, certain bird species have pointed feathers on the ends of their wings, which could be referred to as "wing spurs," "wing quills," or "wing claws".