expression, godan verb (-ru)
get into the swing of things; hit one's stride
Figurative use: describes a person becoming fully engaged and performing well in work or an activity, as if 'fat' (energy, momentum) has built up.
新しい仕事にもだいぶ脂が乗ってきた。
I'm really getting into the swing of my new job.
彼は後半になって脂が乗り
He hit his stride in the second half and showed some great plays.
expression, godan verb (-ru)
put on fat (for winter); become plump and tasty
Literal use: refers to fish or birds fattening up, especially before winter, making them good to eat. Often used about seasonal delicacies.
秋になるとサンマに脂が乗って美味しくなる。
In autumn, Pacific saury put on fat and become delicious.
この時期の鴨は脂が乗っていて最高だ。
Ducks this time of year are plump and at their best.