| Word | Definitions | Synonyms |
|---|---|---|
| scuba | (noun) a device (trade name Aqua-Lung) that lets divers breathe under water; scuba is an acronym for self-contained underwater breathing apparatus | Synonyms: Aqua-Lung, aqualung |
| succuba | (noun) a female demon believed to have sexual intercourse with sleeping men | Synonyms: succubus |