A Times column complaining about the police enforcing the laws against marijuana includes the following passage:
How much pot did Mr. Griffin have in his pocket that night?
"I had a blunt," he said.
Just one?
"Yes," he said.
How much did it cost?
"Five dollars," he said.
A blunt, or marijuana cigarette, contains about one gram of marijuana, about the weight of a dash of salt.
This is an area in which your editor has no firsthand expertise, but other reading I've done — including, say, this Times article from December 2012 — defines a blunt not as a marijuana cigarette but as "a cigar filled with marijuana."