miscue

1. Games. A stroke in billiards that misses or just brushes the ball because of a slip of the cue.
2. A mistake.

1. To make a miscue.
2. To miss a stage cue.

noun

An act or thought that unintentionally deviates from what is correct, right, or true: erratum, error, inaccuracy, incorrectness, lapse, misstep, mistake, slip, slip-up, trip. See correct/incorrect.

verb

To make an error or mistake: err, mistake, slip, slip up, stumble, trip up. See correct/incorrect.

The noun has 2 meanings:

Meaning #1: a faulty shot in billiards; the cue tip slips off the cue ball

Meaning #2: a minor inadvertent mistake usually observed in speech or writing or in small accidents or memory lapses etc.
  Synonyms: slip, slip-up, parapraxis