Noon is a West-Atlantic language of the Cangin subgroup, spoken by 25 000 people in central Senegal, in and around the town of Thies. The aim of this study is to provide a full grammatical description of Noon, since no such study has been done on the language. We have not followed a specific linguistic model as framework, but rather tried to work from the classical approach of presenting the structures in the grammatical units of the language, from morphology to discourse, All analysis is presented with language examples from data collected in the Thies area over the years 1994-1998. The study is divided into 11 chapters, followed by a short interlinearised text sample with a free translation. The first chapter presents a brief overview of the phonology and the morphophonological processes that take place in affixation. Another important feature described in this section is the restricted regressive vowel harmony process, based on the ATR feature. In chapters 2-3, the nominal system is described, including the noun class system of 6 basic classes with which most nominals are in agreement. There is also a threefold locative distinction present in determined nominals. This locative distinction is further elaborated in the demonstratives. Chapter 4 treats prepositions and adverbs. In chapters 5-6, verbal morphology and the verb phrase are presented, A major feature of the Noon verb is the derivational affixation which, apart from carrying aspectual information, also has bearing on the valency of the verb. The conjugational system is based on affixation, but also on the use of auxiliaries and particles. Chapter 7 deals with conjunctions, particles and interjections, and chapter 8 treats clause structures: independent ones, both verbal and non-verbal, but also dependent clauses. In chapter 9, different simple sentence types are described, followed by the complex sentences, including serial and reduplicative types. Chapter 10 depicts some important features that occur on the discourse level such as the wider use of spatial deixis in temporal and textual references. Finally, in chapter 11 is presented a comparative view of some of the major dialect differences in Noon.