a part of any of several scientific instruments that moves back and forth to indicate a position
"The scientist adjusted the cursor on the galvanometer to measure the precise voltage fluctuation."
In plain English: A cursor is the blinking line on your screen that shows where you will type next.
"Move your mouse to position the blinking cursor at the start of the line before you begin typing."
Usage: In computing, use this word to refer specifically to the blinking vertical bar on your screen that indicates where text will appear or which item is selected. Do not confuse it with the mouse pointer, as the cursor typically moves via keyboard commands rather than hand gestures.
To navigate by means of the cursor keys.
"The user could not find the file because they tried to navigate through the directory using only the arrow keys on their keyboard instead of a mouse."
In plain English: To cursor means to move your mouse pointer around on a computer screen so you can click things.
"The cursor didn't move until I clicked the mouse again."
The word comes from the Latin cursor, meaning "runner," which is derived from the verb currō. It entered English to describe a movable indicator on a display screen or page, reflecting its original sense of something that runs across text.