relámpago
/reˈlampaɡo/ · B2 · noun · m
lightning
⚡ re- + lámpago, from lampar 'to shine' (lamp-like flash); think re-LAMP-ago
Relámpago comes from relampaguear, tied to the old verb lampar, 'to shine', related to Greek lampein and English lamp. The re- prefix adds intensity. Hear 'lamp' inside it: a sudden, bright flash of light.