|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|
|a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.|
|1.||the act or an instance of vibrating|
|a. a periodic motion about an equilibrium position, such as the regular displacement of air in the propagation of sound|
|b. a single cycle of such a motion|
|3.||the process or state of vibrating or being vibrated|
|vibration (vī-brā'shən) Pronunciation Key
A rapid oscillation of a particle, particles, or elastic solid or surface, back and forth across a central position.