(phonetics) A vowel that is pronounced with the lips drawn together and forming a circular opening.

plural of rounded vowel

The same but with the mentioned things or people in reverse order or position. / In reversed orientation.

(chemistry) A glass flask used in a laboratory for holding chemical liquids and solutions, which has a spherical shape for uniform heating, and one or more long cylindrical necks.

plural of all-rounder

(informal, historical) A supporter of parliament during the English Civil War.

A roundhead screw, one with a domed head. / Alternative form of Roundhead / (slang) A male whose penis is circumcised. / A circular platform at the end of a pier or breakwater.

(of a screw) Having a dome-shaped head.

(US, slang, originally African-American English) The sport of basketball.

(England, Ireland) A team sport played with bat and ball with one fielding side and one batting side. It is similar to softball and baseball.