Chinese-Chinese dictionary definitions re-using characters from the word
带(lead) + 领(lead) = 带领: to lead

引(guide) + 导(guide) = 引导: " to guide" 

领(lead)+ 导(guide) = 领导: "to lead and guide"

领导 contains the meanings of both  带领 and 引导, I don't see anything wrong with the definition using 带领 and 引导. Yes, both 带领 and 引导 repeated one character from 领导, but they are unique compound words on their own.

It is ok. as long as the dictionary doesn't use the exact compound word in the definition like 领导(v): 领导

It is unavoidable for many different compound words to have a common character among them, you have to look at the whole compound word instead of looking at the two characters individually

The examples below all contain '正' (correct, positive, straight, upright....) but each compound word containing '正' would have very different meaning to each others


正直 = honest
正確 = correct
正常 = normal


One more thing:


  领导(动)：带领并引导大家开展工作


The definition should just be: "带领并引导" (to lead and guide)

领导大家开展工作 would be a good example sentence