Green’s Dictionary of Slang

bolt n.4

[tradename for amyl nitrite]
(drugs)

1. isobutyl nitrite.

[US]Abel Dict. Drug Abuse Terms.
[US]ONDCP Street Terms 4: Bolt — [...] isobutyl nitrite.

2. amphetamine.

[US]ONDCP Street Terms 4: Bolt — Amphetamine.