Lexical

From , from + -al.

Full definition of lexical

(linguistics) Concerning the vocabulary, words, sentences or morphemes of a language

1988, Andrew Radford, Transformational grammar: a first course, So, it seems clear that the idiosyncratic restrictions relating to the range of
complements which a Preposition does or does not permit are directly analo-
gous to the parallel restrictions which hold in the case of Verbs. The restric-
tions concerned are not categorial in nature (i.e. they are not associated with
every single item belonging to a given category): on the contrary, they are
lexical in nature (that is to say, they are properties of individual lexical items,
so that different words belonging to the same category permit a different range
of complements).

(linguistics) Concerning lexicography or a lexicon or dictionary
(linguistics) Denoting a content word as opposed to a function word
a lexical verb