o ‧ ver ‧ drawn /ˌəʊvəˈdrɔːn $ ˌoʊvərˈdrɒːn/ BrE AmE adjective [not before noun]
if you are overdrawn or if your bank account is overdrawn, you have spent more than you had in your account and so you owe the bank money:
I try not to go overdrawn if possible.
overdrawn by
My account is overdrawn by £300.