burrow in

In his first year, he would carve out a spot for himself in the library and burrow in for several hours of intense study every day.

small pallid fishes of shoal tropical waters of North and South America having eyes on stalks atop head; they burrow in sand to await prey.

crustaceans that burrow in mud or under stones in shallow water along the seashore.

Hermit Crab, Republic of Palau, 2003 A glowing hermit crab tentatively peeks out of its coral burrow in Palau.

They cannot burrow in the soil and make nests. The result has been a catastrophic decline in puffin breeding.

The lucky winner will take about 20 minutes to burrow in and fertilize the egg.

But Mora is showing interest in a warthog burrow. In the wild, lions normally eat every 3-4 days, when prey is readily available.

Aquaspirillum bacteria burrow in the mud, and use the magnetic field of the earth to determine position.

A black-tailed prairie dog perks up outside his burrow in South Dakota.

Inside the rabbit's burrow: In one corner, there is a pile of fox bones. In another corner, a pile of wolf bones.

Moles and gophers burrow in the ground.

I had to burrow in the library for the books I needed.

Yet it might seem that the burrow in the story of that name has only one entrance;

They blocked the burrow in with cement