Definition of rundowns:
(n) :
(chiefly with definite article "the") A rough outline of a topic or situation.
(n) :
A reduction, e.g. of an activity, or in the size of something, such as a fleet.
(n) :
(gambling) A summary of the horses to be raced on a particular day, with their weights, jockeys, odds, etc.
(n) :
(baseball) A defensive play in which the runner is caught between two fielders, who steadily converge to tag the runner out.
(n) :
(countable, uncountable) A Caribbean stew of meat or fish (typically mackerel) with reduced coconut milk, yam, tomato, onion and seasonings.
(adj) :
Alternative form of run-down. [(of a person) Tired and exhausted.]