a (qualifier|of Scottish Gaelic verb forms) Used in questions, negative sentences and after certain particles and prepositions.
a (in medicine:) affecting the lower part of the body, such as the legs while standing up, or the back while supine
n (grammar) An element in phrase or clause structure that is not the head. Includes complements modifiers and determiners.
n (grammar) The aorist subjunctive or subjunctive perfective: a form of a verb not used independently but preceded by a particle to form the negative or a tense form. Found in Greek and in the Gaelic languages.