(~s)
1.
Grammar is the ways that words can be put together in order to make sentences.
He doesn’t have mastery of the basic rules of ~.
...the difference between Sanskrit and Tibetan ~.
N-UNCOUNT
2.
Someone’s ~ is the way in which they obey or do not obey the rules of ~ when they write or speak.
His vocabulary was sound and his ~ excellent.
...a deterioration in spelling and ~ among teenagers.
N-UNCOUNT: oft supp N
3.
A ~ is a book that describes the rules of a language.
...an advanced English ~.
N-COUNT
4.
A particular ~ is a particular theory that is intended to explain the rules of a language.
Transformational ~s are more restrictive.
N-VAR: with supp