A long, arched building or gallery.

An arched or covered passageway or avenue.

A range of arches supported on piers or columns. Hence arcade posts if of timber. (Wood, Margaret. The English Medieval House, 409)

A group of arches held up by columns or piers with a roofed passageway.

a nice social spot

The place where you went to play your Arcade Machines during your youth of course! Now becoming very rare places. Most arcade's have now either been set on fire by their owners to get out with a nice insurance payoff, or have been turned into gambling pits filled with fruit machines.

Arcade is a fictional character and supervillain in the Marvel Comics universe. He first appeared in Marvel Team-Up, Volume 1, Issue #65 (January 1978). Due to the unique nature of both his mannerisms and deathtraps, Arcade became one of the most popular villains in the Marvel Comics universe, and went on to do battle with many other superheroes.

Arcade is an Australian television soap opera shown in 1980 that became one of the biggest flops in the history of Australian television. It aired on the Ten Network with the first episode shown on January 20 1980.