Yes, call is a Scrabble word!

Verb

1. Assign a specified (usually proper) proper name to

2. Ascribe a quality to or give a name of a common noun that reflects a quality

3. Get or try to get into communication (with someone) by telephone

4. Utter a sudden loud cry

5. Order, request, or command to come

6. Pay a brief visit

7. Call a meeting; invite or command to meet

8. Read aloud to check for omissions or absentees

9. Send a message or attempt to reach someone by radio, phone, etc.; make a signal to in order to transmit a message

10. Utter a characteristic note or cry

11. Stop or postpone because of adverse conditions, such as bad weather

12. Greet, as with a prescribed form, title, or name

13. Make a stop in a harbour

14. Demand payment of (a loan)

15. Make a demand, as for a card or a suit or a show of hands

16. Give the calls (to the dancers) for a square dance

17. Indicate a decision in regard to

18. Make a prediction about; tell in advance

19. Require the presentation of for redemption before maturation

20. Challenge (somebody) to make good on a statement; charge with or censure for an offense

21. Declare in the capacity of an umpire or referee

22. Lure by imitating the characteristic call of an animal

23. Order or request or give a command for

24. Order, summon, or request for a specific duty or activity, work, role

25. Utter in a loud voice or announce

26. Challenge the sincerity or truthfulness of

27. Consider or regard as being

28. Rouse somebody from sleep with a call

Noun

1. A telephone connection

2. A special disposition (as if from a divine source) to pursue a particular course

3. A loud utterance; often in protest or opposition

4. A demand especially in the phrase "the call of duty"

5. The characteristic sound produced by a bird

6. A brief social visit

7. A demand by a broker that a customer deposit enough to bring his margin up to the minimum requirement

8. A demand for a show of hands in a card game

9. A request

10. An instruction that interrupts the program being executed

11. A visit in an official or professional capacity

12. (sports) the decision made by an umpire or referee

13. The option to buy a given stock (or stock index or commodity future) at a given price before a given date