(informal) Any of the natural and physical sciences that use the scientific method and experiments to test theories. Examples include mathematics, biology, physics, chemistry and geology.

(typography) A non-breaking space.

plural of hard palate

plural of hard freeze

Alternative spelling of hard sell

(colloquial, countable) Difficulties; a difficult time; trouble. / (colloquial, uncountable) A prison term.

(UK, dated, Rhode Island, often imperative) To remain still; to stop suddenly.

Alternative spelling of hard-ass

A type of landscaping which prominently uses hard materials, like stone and metals, rather than soil and plants.

A bird species which has a hard, strong bill, to feed (mainly) on seeds and/or nuts