Meaning : A deficiency or failure in neurological or mental functioning.
Example :
The people concerned have a deficit in verbal memory.
They have serious linguistic deficits.
Meaning : (sports) the score by which a team or individual is losing.
(sports) the score by which a team or individual is winning.
leadMeaning : An excess of liabilities over assets (usually over a certain period).
Example :
Last year there was a serious budgetary deficit.