scuba noun & verb. ['sku:bǝ, 'skju:bǝ] Also SCUBA. M20.
[Acronym, from self-contained underwater breathing apparatus.]
A. noun. Self-contained apparatus to enable a swimmer to breathe under water, comprising tanks of compressed air strapped on the back and feeding air automatically to a mask or mouthpiece; ellipt. scuba-diving. M20.

Comb.:
scuba-dive verb intrans. swim under water using scuba apparatus; scuba-diver a person who goes scuba-diving; scuba-diving swimming under water using scuba apparatus, esp. as a sport.
b. verb intrans. Go scuba-diving. M20.

[TahlilGaran] English Dictionary ▲