Synecdoche is a figure of speech in which a part is made to represent the whole or vice versa. It is often used for poetic effect to give a more profound, concise, or expansive quality to ordinary speech or writing.

‘All hands on deck' uses ‘hands' to represent the sailors themselves, emphasizing their role in the labor of the ship.

Referring to a car as ‘wheels,' highlights the vehicle by referring to it as one of its essential parts.

‘Don't get your meat where you get your bread' is a double synecdoche that advises against workplace romance.

Synecdoche can enhance your speeches by adding layers of meaning and inspiring your audience to think beyond the literal words.