व्याकरणं नाम वेदानां रक्षकत्वाद् वेदार्थावबोधने सहायकत्वात्, प्रकृति-प्रत्यय-उपदेश-पुरस्सर-पदस्वरूप-प्रतिष्ठापकत्वाद् अर्थनिर्णयनकृत्साधनेषु अन्यतमसाधनत्वेन प्रयुक्तत्वाद् वेदाङ्गस्य किञ्चन अङ्गम्।

In linguistics, a grammar is the set of rules for how a natural language is structured, as demonstrated by its speakers or writers. Grammar rules may concern the use of clauses, phrases, and words. The term may also refer to the study of such rules, a subject that includes phonology, morphology, and syntax, together with phonetics, semantics, and pragmatics. There are, broadly speaking, two different ways to study grammar: traditional grammar and theoretical grammar.