To understand.
To take advantage of something, to seize, to jump at a chance.
To grip; to take hold, particularly with the hand.
Understanding.
That which is accessible; that which is within one's reach or ability.
Grip.
To apprehend in thought so as to fix and hold in the mind; to memorize.
To generate an idea.
Produced by an idea.
The actual existence supposed to correspond with an idea; the correlate in real existence to the idea as a thought or existence.