From WordNet (r) 3.0 (2006) :
slammer
n 1: a person who closes things violently; "she's a dramatic
slammer of doors"
2: a correctional institution used to detain persons who are in
the lawful custody of the government (either accused persons
awaiting trial or convicted persons serving a sentence) [syn:
jail, jailhouse, gaol, clink, slammer, poky,
pokey]