noun
fruit near the end of the vine; weak-looking fellow
Rare word. Literally refers to a fruit that grows late in the season and is therefore small or weak; figuratively describes a person who appears frail or unimpressive.
末生の瓜は味が落ちる。
A melon that grows late in the season loses flavor.
彼は末生のような男だ。
He is a weak-looking fellow.