Definitions:

1. A strong, portable light, often used by hunters to locate animals at night by shining the light into their eyes, causing them to become temporarily blinded or dazed. NOUN
   • The hunter used a jacklight to spot deer in the dense forest at night.
2. The act of using a bright light to attract or momentarily blind animals during nightime hunting or fishing. VERB
   • They were caught jacklighting deer, which is illegal in many areas.

Synonyms:

• hunt illegally
• jack
• lamp
• spotlight