What is a drop batter in baking?

Drop batters, such as those used to make drop biscuits, are too soft and runny to be rolled out and thus are dropped from a spoon. I use a large wooden spoon to drop biscuit batter on to the baking sheet, resulting in biscuits about 2 1/2" in diameter and with a more freeform shape than rolled biscuits cut with a cookie cutter.