QUESTION: What do you mean by Iambic Metre?
ANSWER: The Iambic metre is a foot of verse. It consists of an unstressed syllable followed by a stressed one. This pattern is called iambic. The number of iambic feet in an iambic line may vary from two to seven.
Example:  The griz/zly Bear/ is huge/ and wild;
He has devoured the infant child.
The infant child is not aware
It has been eaten by the bear. [ A. E. Housman; Infant Innocence]