The Collaborative International Dictionary of English v.0.48:

In \In\, adv.
   1. Not out; within; inside. In, the preposition, becomes an
      adverb by omission of its object, leaving it as the
      representative of an adverbial phrase, the context
      indicating what the omitted object is; as, he takes in the
      situation (i. e., he comprehends it in his mind); the
      Republicans were in (i. e., in office); in at one ear and
      out at the other (i. e., in or into the head); his side
      was in (i. e., in the turn at the bat); he came in (i. e.,
      into the house).
      [1913 Webster]

            Their vacation . . . falls in so pat with ours.
                                                  --Lamb.
      [1913 Webster]

   Note: The sails of a vessel are said, in nautical language,
         to be in when they are furled, or when stowed. In
         certain cases in has an adjectival sense; as, the in
         train (i. e., the incoming train); compare up grade,
         down grade, undertow, afterthought, etc.
         [1913 Webster]

   2. (Law) With privilege or possession; -- used to denote a
      holding, possession, or seisin; as, in by descent; in by
      purchase; in of the seisin of her husband. --Burrill.
      [1913 Webster]

   In and in breeding. See under Breeding.

   In and out (Naut.), through and through; -- said of a
      through bolt in a ship's side. --Knight.

   To be in, to be at home; as, Mrs. A. is in.

   To come in. See under Come.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Breeding \Breed"ing\, n.
   1. The act or process of generating or bearing.
      [1913 Webster]

   2. The raising or improving of any kind of domestic animals;
      as, farmers should pay attention to breeding.
      [1913 Webster]

   3. Nurture; education; formation of manners.
      [1913 Webster]

            She had her breeding at my father's charge. --Shak.
      [1913 Webster]

   4. Deportment or behavior in the external offices and
      decorums of social life; manners; knowledge of, or
      training in, the ceremonies, or polite observances of
      society.
      [1913 Webster]

            Delicacy of breeding, or that polite deference and
            respect which civility obliges us either to express
            or counterfeit towards the persons with whom we
            converse.                             --Hume.
      [1913 Webster]

   5. Descent; pedigree; extraction. [Obs.]
      [1913 Webster]

            Honest gentlemen, I know not your breeding. --Shak.
      [1913 Webster]

   Close breeding, In and in breeding, breeding from a male
      and female from the same parentage.

   Cross breeding, breeding from a male and female of
      different lineage.

   Good breeding, politeness; genteel deportment.
      [1913 Webster]

   Syn: Education; instruction; nurture; training; manners. See
        Education.
        [1913 Webster] Breeze