grasp
noun.
understanding of the nature or meaning or quality or magnitude of something
he has a good grasp of accounting practices
Synonym: hold, appreciation
noun.
the limit of capability
within the compass of education
Synonym: compass, range, reach
noun.
an intellectual hold or understanding
a good grip on French history|they kept a firm grip on the two top priorities|he was in the grip of a powerful emotion|a terrible power had her in its grasp
Synonym: grip
noun.
the act of grasping
he released his clasp on my arm|he has a strong grip for an old man|she kept a firm hold on the railing
verb.
hold firmly
Synonym: hold on
verb.
get the meaning of something
Do you comprehend the meaning of this letter?