Student or Learner
Is "laziness" the only meaning?
My bilingual dictionary also gives other meanings : incompetence ; being passive.
But ALL the monolingual dictionaries I've consulted give only "laziness"
This is the sentence ( from a medical textbook):
Anesthesia for eye surgery requires a fair amount of preparation and constant vigilance during and after the regional block. Any indolence on the part of the anesthesia provider could potentially turn out to be a life-threatening situation for the patient.
You have many online English dictionaries at your disposal.
Check out these: http://www.usingenglish.com/dictionary.html, which are found within the Reference tab of this site. The American Heritage Dictionary of the English Language (Fourth Edition) is also a good source, especially for US English usage.
You could say that "indolence" implies an unwillingness to make an effort, or a disinclination to take pains, or perhaps a sluggish response to events.
Not a professional ESL teacher.