Horses' gums recede with age, leading to longer teeth. A common way to inspect a horse's worth is to check it's mouth, hence the phrase. Receiving a horse as a gift and immediately inspecting its value was considered offensive, much like inquiring about the worth of a present today is rude.
Poetry is the first major literary genre. All types of poetry share specific characteristics. In fact, poetry is a form of text that follows a meter and rhythm with each lines and syllables. It is further subdivided into different genres such an epic poem, narrative, romantic, dramatic, and lyric.
Poetry Forms - (Poetry Terms follow) The definition of poetry is a type of literature that is written in meter. A poem (from the Greek poiemalis) a specific work of poetry. A Poetry Form is the general organizing principle of a literary work.