I A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Impact The moment when the ball strikes the club. In The second nine holes as opposed to out - the first nine holes Inland To land in land In play Within the course (not out of bounds). Inside Being nearer the hole than the ball of your opponent. Intended line The line you expect the ball to travel after hit. Interlocking grip A type of grip where the little finger of the left hand is intertwined with the index finger of the right hand for a right handed player. The converse applies to a left hander. Iron Any one of a number of clubs with a head made of iron or steel. See definitions for individual clubs "two iron" etc.