noun which may take the genitive case particle 'no'
for two people; serving for two; work of two
Used for portions, meals, or work capacity equivalent to two people. Often appears as 二人前の〜 or 二人前を〜.
二人前の料理を注文した。
I ordered a meal for two.
彼は一人で二人前の仕事をする。
He does the work of two people by himself.