What is Baggage?

Legal Definition
Baggage or luggage consists of bags, cases, and containers which hold a traveller's articles during transit.

The modern traveller can be expected to have packages containing clothing, toiletries, small possessions, trip necessities, and on the return-trip, souvenirs. For some people, luggage and the style thereof is representative of the owner's wealth.

Baggage (not luggage), or baggage train, can also refer to the train of people and goods, both military and of a personal nature, which commonly followed pre-modern armies on campaign.
-- Wikipedia
Legal Definition
Such articles as are carried by a traveller; luggage. Every thing which a passenger, carries, with him is not baggage. Large sums of money, for example, carried in a travelling trunk, will not be considered baggage, so as to render the carrier responsible. 9 Wend. R. 85. But a watch deposited in his trunk is part of his baggage. 10 Ohio R. 145. See, as to what is baggage, 6 Hill, R. 586 5 Rawle, 188, 189; 1 Pick. 50.

2. In general a common carrier of passengers is responsible for baggage, if lost, though no distinct price be paid for transporting it, it being included in the passenger's fare. Id. The carrier's responsibility for the baggage begins as soon as it has been delivered to him, or to his servants, or to some other person authorized by him to receive it. Then the delivery is complete. The risk and responsibility of the carrier is at an end as soon as he has delivered the baggage to the owner or his agent; and if an offer to deliver it be made at a proper time, the carrier will be discharged from responsibility, us 'such yet, if the baggage remain in his custody afterwards, he will hold as, bailee, and be responsible for it according to the terms of such bailment ana, R. 92. Vide Common Carriers

3. By the act of congress of March 2, 1799, sect. 46, 1 Story's L. U. S. 612, it is declared that all wearing apparel and other personal baggage, &c., of persons who shall arrive in the United States, shall be free and exempted from duty.
-- Bouviers Law Dictionary
Legal Definition
In the law of carriers. This term comprises sucji articles of personal convenience or necessity as are usually carried by passengers for their personal use, and not merchandise or other valuables, although carried in the trunks of pas-sengeis, which are not designed for any such use, but for other purposes, such as a sale and the like. The term includes whatever the passenger takes with him for his personal use or convenience according to the habits or wants of the particular class to which he belongs, either with reference to the immediate necessities or ultimate purpose of the journey. Macrow v. Railway Co., L. R. 6 Q. B. 612; Bomar v. Maxwell, 9 Humph. (Tenn.) 621, 51 Am. Dec. 682; Railroad Co. v. Collins, 56 111. 217; Hawkins v. Hoffman, 6 Hill (N. Y.) 590, 41 Am. Dec. 767; Mauritz v. Railroad Co. (C. C.) 23 Fed. 771; Dexter v. Railroad Co., 42 N. Y. 326, 1 Am. Rep. 527; Story, Bailm. ยง 499.
-- Black's Law Dictionary
Legal Definition
Articles of clothing, attire and personal effects carried by a traveller. See Ann. Cas. 1912C, 627.
-- Ballentine's Law Dictionary