Two thousand—or "2k"—in slang monetary terms refers to $2,000. The "g" stands for "grand," a colloquial expression for one thousand dollars that has been used since at least the early 20th century. So "2g" breaks down as 2 × $1,000 = $2,000.
This slang is common in informal contexts, especially in hip-hop culture, street vernacular, and casual conversation among friends. You might hear phrases like "That car costs 2g" or "I need to save up 5g for rent." The term is primarily North American and is understood across English-speaking communities, though usage varies by region and generation.
It's worth noting that in other contexts, "g" can have different meanings—for instance, in scientific or metric measurements, "g" stands for grams (a unit of weight). But when discussing money in casual speech, "g" almost always means "grand" or thousand dollars. The slang is straightforward enough that context usually makes the meaning clear, though it's less formal than saying the full dollar amount and is typically used in relaxed conversation rather than official documentation or formal writing.