–adjective

1.	operating under the direct control of, or connected to, a main computer.

2.	connected by computer to one or more other computers or networks, as through a commercial electronic information service or the Internet.

3.	of or denoting a business that transmits electronic information over telecommunications lines: an on-line bookstore.

4.	available or operating on a computer or computer network: an on-line dictionary.

5.	by means of or using a computer: on-line shopping.

6.	Radio. (of a network) supplying affiliated stations with all or a substantial part of their programming.

7.	Television. of or pertaining to the final editing of a videotaped program.

8.	done or accomplished while in operation or active service: on-line maintenance.

9.	located on major routes or rail lines: on-line industries.

–adverb

10.	with or through a computer, esp. over a network.

–noun, plural -nos for 1.

1.	a building or large room used for meetings, entertainment, dancing, etc., esp. such a place equipped with gambling devices, gambling tables, etc.

2.	(in Italy) a small country house or lodge.

3.	Also, cassino. Cards. a game in which cards that are face up on the table are taken with eligible cards in the hand.

–verb (used with object)

1.	to assist (a person) to travel through, or reach a destination in, an unfamiliar area, as by accompanying or giving directions to the person: He guided us through the forest.

2.	to accompany (a sightseer) to show points of interest and to explain their meaning or significance.

3.	to force (a person, object, or animal) to move in a certain path.

4.	to supply (a 92b person) with advice or counsel, as in practical or spiritual affairs.

5.	to supervise (someone's actions or affairs) in an advisory capacity.

–noun

6.	a person who guides, esp. one hired to guide travelers, tourists, hunters, etc.

7.	a mark, tab, or the like, to catch the eye and thus provide quick reference.

8.	a guidebook.

9.	a book, pamphlet, etc., giving information, instructions, or advice; handbook: an investment guide.

10.	a guidepost.

11.	a device that regulates or directs progressive motion or action: a sewing-machine guide.

12.	a spirit believed to direct the utterances of a medium.

13.	Military. a member of a group marching in formation who sets the pattern of movement or alignment for the rest.