call
noun
1.
2.
3.
a demand
5.
6.
a demand by a broker that a customer deposit enough to bring their margin up to the minimum requirement
Derived from:
call 7.
a demand for a show of hands in a card game
8.
a request
9.
an instruction that interrupts the program being executed
10.
a visit in an official or professional capacity
12.
the option to buy a given stock (or stock index or commodity future) at a given price before a given date
Derived from:
call 13.
a special disposition (as if from a divine source) to pursue a particular course