trailing edge

noun
UK /ˌtreɪlɪŋ ˈedʒ/
US /ˌtreɪlɪŋ ˈedʒ/

The back edge of a wing or blade where the air leaves.

The bird's wing has a smooth trailing edge that helps it glide.


OTHER MEANINGS

2. The rear boundary of a moving object or wave.

The trailing edge of the storm brought heavy rain.

3. The part of a signal that comes last as it fades.

Engineers measured the trailing edge of the pulse.

4. The back edge of a sail or flag.

The wind flapped the trailing edge of the sail.