/oh'veuhr buy"/ , v. , overbought, overbuying .
v.t.
1. to purchase in excessive quantities.
2. Finance. to buy on margin in excess of one's ability to provide added security in an emergency, as in a falling market.
v.i.
3. to buy regardless of one's needs or financial means.
[ 1400-50; late ME overbiggen. See OVER-, BUY ]