A problem that is challenging to solve.
Used other than figuratively or idiomatically: see hard, nut, crack.
A situation, person, group, etc. which is difficult to overcome or deal with.
A place, opportunity, etc. to which it is difficult to gain entry.
An amount that is difficult to finance.
A difficult problem.
Any of several mammalian species of the genus Sus, having cloven hooves, bristles and a nose adapted for digging; especially the domesticated animal Sus domesticus.
A light pinkish-red colour, like that of a pig (also called pig pink).
A lead container used for radioactive waste.
A young swine, a piglet (contrasted with a hog, an adult swine).
A simple dice game in which players roll the dice as many times as they like, either accumulating a greater score or losing previous points gained.
The general-purpose M60 machine gun, considered to be heavy and bulky.
Someone who overeats or eats rapidly and noisily.
The edible meat of such an animal; pork.
A dirty or slovenly person.
A police officer.
A lecherous or sexist man.
The mold in which a block of metal is cast.
A device for cleaning or inspecting the inside of an oil or gas pipeline, or for separating different substances within the pipeline. Named for the pig-like squealing noise made by their progress.
A very obese person.
An earthenware hot-water jar to warm a bed; a stone bed warmer
A block of cast metal.
earthenware, or an earthenware shard
To live together in a crowded filthy manner.
To huddle or lie together like pigs, in one bed.
to give birth.
To clean (a pipeline) using a pig (the device).
To greedily consume (especially food).