(idiomatic) To attempt to go to sleep by thinking of something boring, traditionally by counting imaginary sheep.

(nautical) a large, spare anchor used in an emergency / (by extension) a source of help in times of danger; last resort

A person who herds sheep; a shepherd.

A female shepherd. / A large and deep armchair with a cushion.

A region's air supply. / The region supplied by a source of air.

(chemistry) the outermost shell of electrons in an atom; these electrons take part in bonding with other atoms

plural of shelf

Third-person singular simple present indicative form of shelve

A fisheries and colloquial term for an aquatic invertebrate having an inner or outer shell, such as a mollusc or crustacean, especially when edible.

a small wedge-shaped tent made by folding two waterproof sheets of material together