sleeper
n 1: a person who is sleeping [syn: {slumberer}]
2: one of the cross braces that support the rails on a railway
track; "the British call a railroad tie a sleeper" [syn: {tie},
{railroad tie}, {crosstie}]
3: a passenger car that has berths for sleeping [syn: {sleeping
car}, {wagon-lit}]
4: tropical fish that resembles a goby and rests quietly on the
bottom in shallow water [syn: {sleeper goby}]