cat

1. An animal of the family Felidae:
2. A person:
3. A strong tackle used to hoist an anchor to the cathead of a ship.
4. Short form of cat-o'-nine-tails.
5. A sturdy merchant sailing vessel (now only in "catboat").
6. The game of "trap and ball" (also called "cat and dog").
7. The pointed piece of wood that is struck in the game of tipcat.
8. A vagina, a vulva; the female external genitalia.
9. A double tripod (for holding a plate, etc.) with six feet, of which three rest on the ground, in whatever position it is placed.
10. A wheeled shelter, used in the Middle Ages as a siege weapon to allow assailants to approach enemy defences.

1. To hoist (the anchor) by its ring so that it hangs at the cathead.
2. To flog with a cat-o'-nine-tails.
3. To vomit.
4. To go wandering at night.
5. To gossip in a catty manner.

1. A twin-hulled ship or boat.
2. A quarrelsome woman; a scold.
3. A raft of three pieces of wood lashed together, the middle piece being longer than the others, and serving as a keel on which the rower squats while paddling.
4. An old kind of fireship.

noun

A program and command in Unix that reads one or more files and directs their content to the standard output.

1. To apply the cat command to (one or more files).
2. To dump large amounts of data on (an unprepared target) usually with no intention of browsing it carefully.

1. Terrible, disastrous.

   The weather was cat, so they returned home early.

noun

A street name of the drug methcathinone.

1. A catapult.

   a carrier's bow cats

1. A group, often named or numbered, to which items are assigned based on similarity or defined criteria.

   I wouldn't put this book in the same category as the author's first novel.

2. A collection of objects, together with a transitively closed collection of composable arrows between them, such that every object has an identity arrow, and such that arrow composition is associative.

   Just as a monoid consists of an underlying set with a binary operation "on top of it" which is closed, associative and with an identity, a category consists of an underlying digraph with an arrow composition operation "on top of it" which is transitively closed, associative, and with an identity at each object. In fact, a category's composition operation, when restricted to a single one of its objects, turns that object's set of arrows (which would all be loops) into a monoid.

noun

Any fish of the order Siluriformes, mainly found in fresh water, lacking scales, and having barbels like whiskers around the mouth

1. Someone who creates a fake profile on a social media platform in order to deceive people.
2. Such a fake profile.

1. Any of a variety of earth-moving machines. (from their manufacturer Caterpillar Inc.)
2. A caterpillar drive vehicle (a ground vehicle which uses caterpillar tracks), especially tractors, trucks, minibuses, and snow groomers.