Grammar. 1  Also called objective case. (in English and some other languages) a case specialized for the use of a form as the object of a transitive verb or of a preposition, as him in The boy hit him, or me in He comes to me with his troubles. 2  a word in that case.
pinning-a mutual promise of a couple not to date anyone else; on college campuses it was once signaled by the giving of a fraternity pin. promise-a verbal commitment by one person to another agreeing to do (or not to do) something in the future.
pin (one's) heart to (one's) sleeve. To openly display or make known one's emotions or sentiments. I knew Josh had a crush on me because he always pins his heart to his sleeve. Growing up with a father who never showed any emotion, I made a point of always pinning my heart to my sleeve.