1. Plural of the letter S; the letter S or its sound.
2. Something shaped like the letter S; an S-shaped curve or object.

Examples

• The word 'hisses' contains three esses.
• She carefully wrote all the esses in her calligraphy practice.
• The road had several esses that made driving difficult.
• The river formed natural esses as it wound through the valley.
• In phonetics, we studied how esses are pronounced differently across dialects.