Brig

From Memory Alpha, the free Star Trek reference.

For another meaning of "Brig", please see Brig (vessel).

A holding cell in use in 2366

A brig or holding cell is a type of prison on board a starship. These are heavily-guarded rooms that employ either gates or force fields to keep those incarcerated segregated from the general population of the vessel. These areas are used to contain criminals, fugitives, and others who pose a security risk and must be detained. They are also used as a means of punishment within the Starfleet ranks. (VOY: "Thirty Days")

24th century brigs were commonly covered on five sides by bulkheads with an electrostatic force field on the sixth side, which could be turned off and on as an entrance or exit way.

In 2266, Kirk and Spock attempted to lure Charlie Evans into the Enterprise's brig so as to neutralize his destructive proclivities. This detention facility was no match for Evans' mental abilities; in fact, he dematerialized the bulkhead containing the circuitry powering the force field. (TOS: "Charlie X")

Members of the ISS Enterprise landing party were incarcerated in their counterpart brig in 2267 while Spock determined a way to return them to the mirror universe. In this instance, instead of a force field, a solid (yet transparent) substance denied the mirror Kirk egress from the brig. (TOS: "Mirror, Mirror")

The brig on board the USS Enterprise-A was tested by Spock during the design and therefore caused him, Kirk and Leonard McCoy a problem when they needed to escape from it when Sybok took control of the Enterprise in 2287. Starfleet brigs included facilities such as a sink and toilet hidden behind a panel in the wall. (Star Trek V: The Final Frontier)

In a Xindi-Reptilian brig, the prisoner is chained to the ceiling while soldiers punch the captive. (ENT: "Azati Prime")

Roga Danar was held in a holding cell on board the Enterprise-D in 2366 after he attacked Miles O'Brien, two security officers, Lieutenant Worf, and Commander Riker. Minister Nayrok proposed to keep him unconscious because he doubt that the holding cell would stop him. Later, when an Angosian transport would beam him into the brig on board their ship, Danar was able to escape. (TNG: "The Hunted")

In 2371 Crewman Kenneth Dalby suggested, Tuvok should bring him into the brig, after he made repairs without an order and caused malfunctions of several systems. (VOY: "Learning Curve")

Most Cardassian brigs are not very comfortable. Starfleet brigs are less spartan, as the Federation doesn't believe in cruel and unusual punishment.