To study the green in order to determine how the putt should be played.
1. (aka: "align") position/direct/orient the body and/or club toward an intended target. 2. assessing the direction of a shot or putt. Example: 1. She thought she had lined up straight but her shot was well right of the green. 2. The gallery was quiet as Weir lined up his eagle putt."
To study the line of a putt to determine direction and speed.
Where a golfer looks carefully at the green to decide how to play the putt.
To study the putting surface in order to determine how a putt should be hit.