fatten

verb6

1. •
   To cause (a person or animal) to be fat or fatter.

   • We must fatten the turkey in time for Thanksgiving.
2. •
   To become fat or fatter.

   • He gradually fattened in the five years after getting married.
3. •
   To make thick or thicker (often something containing paper, especially money).

   • “You horrible old man, you’ve always tried to turn Erik into a slave, to fatten your pocketbook! […]” — 1920
4. •
   To become thick or thicker.

   • The pencil-line of light by his feet fattened to a bar. Alan looked around and saw Norris Ridgewick. — 1991
5. •
   To make (soil) fertile and fruitful.

   • As the riuer of Nilus was to Egypt in steed of heauen to moisten and fatten the earth; so their confidence was more in it then in heauen — 1612
6. •
   To become fertile and fruitful.

   • These hostile Fields shall fatten with thy Blood. — 1700