Definition of: sigh

(sī) v.i.
1. To draw in and exhale a deep, audible breath, as in expressing sorrow, weariness, pain, etc.
2. To make a sound suggestive of a sigh, as the wind.
3. To yearn; long.
—v.t.
4. To express with a sigh.
5. To lament with sighs.
—noun The act or sound of or as of sighing. [Back formation <ME sighte, pt. of siken <OE sīcan sigh]