WordDictionary

Noun:

• A distinguishable part of a sequence or cycle occurring over time.
• Any appearance or aspect of an object of mental apprehension or view.
• astronomy A particular appearance or state in a regularly recurring cycle of changes with respect to quantity of Wikipedia's article ''Lunar phase''.
• physics Any one point or portion in a recurring series of changes, as in the changes of motion of one of the particles constituting a wave or vibration; one portion of a series of such changes, in distinction from a contrasted portion, as the portion on one side of a position of equilibrium, in contrast with that on the opposite side.
• rugby union The period of play between consecutive breakdowns.
• That which is exhibited to the eye; the appearance which anything manifests, especially any one among different and varying appearances of the same object.

Verb:

• intransitive To become stunned or shocked.
• (to phase out) To discontinue (doing) something over a period of time (i.e., in phases).
• transitive To stun or shock someone.