What does "aspirate" mean?

Aspirate: A sound consisting of, or characterized by, a breath like the sound of h; the breathing h or a character representing such a sound; an aspirated sound.

Additional senses

  1. 2.A mark of aspiration used in Greek; the asper, or rough breathing. Bentley.
  2. 3.An elementary sound produced by the breath alone; a surd, or nonvocal consonant; as, f, th in thin, etc.
  3. 4.Pronounced with the h sound or with audible breath. But yet they are not aspirate, i. e., with such an aspiration as h. Holder.

Sources