To grasp a concept fully and thoroughly, especially (of words, statements, art, etc.) to be aware of the meaning of and (of people) to be aware of the intent of.
User Defined Definitions
"know and comprehend the nature or meaning of"
"make sense of a language"
"believe to be the case"
"be understanding of"
"fully apprehended as to purport or meaning or explanation"
"implied by or inferred from actions or statements"