bush out

verb3

1. •
   To be bushy; to protrude in a thick tuft.

   • [The Grizzly] has a heavy head, a rather wolflike face, with full cheek tufts of fur bushing out well up to the ears, — 1898
2. •
   To become bushy; to grow into the form of a thick tuft.

   • Removing the shoots on the side of the plant will encourage it to grow upward instead of bushing out.
3. •
   To cause (something) to protrude in a thick tuft.

   • Mr. FOLIO […] waited in his gold laced hat with a handkerchief of Mrs. FOLIO’s about his ears, till the return of his wig, properly bushed out and powdered, — 1763