John Keats’ ‘Ode to a Nightingale’ is considered to be the one of the masterpieces of English like his other odes. It is one of the great odes written by Keats in May 1819. It is a superb poem which was written by the poet while he was staying with his friend Charles Armitage Brown at Hampstead. For the stylistic study of poetry basically there are six levels of linguistic stylistic analysis, i.e, graphological, phonological, lexical, syntactic, semantic and discoursal. The present study makes an attempt at the interpretive or analytical research and gives a linquistic interpretation and analysis of Keats’ ‘Ode to a Nightingale’ from a single aspect of stylistic study i.e. at the lexical level. At the lexical level of the linguistic framework, ‘Ode to a Nightigale’ is analysed to find out the noticeable lexical features, the construction of phrases, and ways the poet adopts for forming new words and expressions.