What is the meaning of Nitro?

The univalent NO2 functional group.

Nitroglycerin, especially as medication.

A beer that is nitrogenated to give it a more creamy head.

Nitromethane.

Nitrogen, especially as liquid nitrogen.

Nitrous oxide; the system that adds nitrous oxide to a car engine; by extension, a boost mechanic to speed up cars in a video game.

Containing the nitro group.

interior

nitro (medical nitroglycerin)

nitre, saltpetre

clipping of nitroglicerina (nitroglycerine)

first-person singular present indicative of nitrare

dative/ablative singular of nitrum

nitro

first-person singular present indicative of nitrar

first-person singular present indicative of nitrir

nitro

first-person singular present indicative of nitrar

Source: wiktionary.org