Word Study
margin call
WORDNET DICTIONARY
Noun margin call has 1 sense
- margin call(n = noun.communication) call - a demand by a broker that a customer deposit enough to bring his margin up to the minimum requirement; Array is a kind of demand
CIDE DICTIONARY
margin call, n.
A demand by a broker that a customer deposit enough to bring his margin up to the minimum requirement; -- caused by the decline in market prices of a security or commodity purchased on margin{5}. [WordNet 1.5]
For further exploring for "margin call" in Webster Dictionary Online