(idiomatic) To write down hurriedly; to make a note of.
Tell me his number, and I'll jot it down on this scrap of paper.
Usually I jot down what I can remember of them when I get home.
Carry a small notepad in your pocket and jot down your observations.
His writing apparatus - a noctograph - lay before him, and he kept his ivory style in his hand to jot down notes as the reading progressed.
All guests jot down the name of their favorite charity.
Be sure to make notes as the candidate answers or take a few minutes immediately following the interview to jot down your impressions of the person and how well they responded to the questions on your list.