call%20on

verb

1. 1

   To visit (a person); to pay a call to.

   “I really should call on my aunt more often.”

2. 2

   To select (a student in a classroom, etc.) to provide an answer.

   “He sat there, baffled, hoping nobody would call on him.”

3. 3

   (also call upon) To request or ask something of (a person); to select for a task.

   “The king called on his subjects to take up arms and defend the kingdom.”

4. 4

   (also call upon) To have recourse to.

   “Exhausted, he called on his last ounce of strength.”

5. 5

   To correct; to point out an error or untruth.

   “The salesman persisted in quoting a rate higher than was listed, until we called him on it.”