A joint in which one segment has a rounded end and the next segment has a bowl-shaped end, with the rounded end being fitted into the bowl shape, allowing the first segment to move around an indefinite number of axes which have one common center.

(chemistry) A molecular model of a chemical substance, displaying the three-dimensional position of the atoms (as spheres) and the bonds between them (as connecting rods).

plural of ball-and-stick model

present participle of play the ball and not the man

(sports) To attack the ball instead of an opponent who is usually controlling the ball. Often considered a positive action, and sometimes a requirement not to concede a penalty.

simple past tense and past participle of play the ball and not the man

Third-person singular simple present indicative form of play the ball and not the man

To continue working on something that someone else started, especially when one does so efficiently and successfully.

Any small foam ball, soft and very light, designed for indoor use.

(tenpin bowling) The situation where all ten pins are knocked down with the second throw in a frame. The points scored by the next ball rolled (in the next frame) are added to the spare's frame's score.