Definitions
1.nounSomeone who sleeps."I'm a light sleeper: I get woken up by the smallest of sounds."
2.nounThat which lies dormant, as a law.
3.nounA spy, saboteur, or terrorist who lives unobtrusively in a community until activated by a prearranged signal; may be part of a sleeper cell.
4.nounA small starter earring, worn to prevent a piercing from closing.
5.nounA railway sleeping car."We spent a night on an uncomfortable sleeper between Athens and Vienna."
6.nounA sleeper hold.
7.nounSomething that achieves unexpected success after an interval of time."A box-office bomb when it first came out, the film was a sleeper, becoming much more popular decades after being released."
8.nounA goby-like bottom-feeding freshwater fish of the family Odontobutidae.
9.nounA nurse shark (family Ginglymostomatidae).
10.nounA type of pajama for a person, especially a child, that covers the whole body, including the feet."Aaron, Devin, and Laura looked so comfy in their sleepers."
11.nounAn automobile which has been internally modified to excess, while retaining a mostly stock appearance in order to fool opponents in a drag race, or to avoid the attention of the police.
12.nounA sedative.
13.verbTo mark a calf by cutting its ear.