1
to grow fat;to gain weight;to put on weight
肥えた鶏は卵を産まない。
Fat hens lay few eggs.
2
to grow fertile (of soil)
農業には肥えた土地が不可欠だ。
Fertile soil is indispensable for agriculture.
3
to be discerning (of one's palate, eye, ear, etc.);to be discriminating;to be refined
See also:
目が肥える (めがこえる)
4
to become rich;to become wealthy