Sentence:  The native speaker's grammatical competence is reflected in two types of/  "<b>intuition</b>" which speakers have about their native language(s) — (i) <WSD>intuitions</WSD>/  about sentence "well-formedness", and (ii) <WSD>intuitions</WSD> about sentence "structure"./  The word "<b>intuition</b>" is used here in a technical sense which has become stand-/  ardised in Linguistics: by saying that a native speaker has "<b>intuitions</b>" about the/  well-formedness and structure of sentences, all we are saying is that he has the/  ability to make "judgments" about whether a given sentence is well-formed or/  not, and about whether it has a particular structure or not. [...] 
Meaning of the word marked with <WSD> tags:  Immediate cognition without the use of conscious rational processes.