1. pronoun /ɔːt,ɔt,ɑt/
to other objects, which for aught we know, may be only in appearance similar ;
2. noun /ɔːt,ɔt,ɑt/
a) zero
b) The digit zero as the decade in years. For example, aught-nine for 1909 or 2009.
3. adverb /ɔːt,ɔt,ɑt/
At all, in any degree.
4. verb /ɔːt,ɔt,ɑt/
b) to owe, be obliged or obligated to
5. adjective /ɔːt,ɔt,ɑt/
possessed of
Wikipedia foundation.