lightning
US /ˈlaɪt.nɪŋ/
UK /ˈlaɪt.nɪŋ/

1.
relámpago, rayo
the occurrence of a natural electrical discharge of very short duration and high voltage between a cloud and the ground or within a cloud, accompanied by a bright flash and typically also thunder
:
•
The sky was lit up by a sudden flash of lightning.
El cielo se iluminó con un repentino destello de relámpago.
•
We saw lightning strike a tree in the distance.
Vimos un rayo caer sobre un árbol a lo lejos.
1.
relámpago, fulminante
very fast; with great speed
:
•
He moved with lightning speed to catch the ball.
Se movió con la velocidad del rayo para atrapar la pelota.
•
The decision was made with lightning quickness.
La decisión se tomó con una rapidez fulminante.