hole

A hollow place or cavity; an excavation; a pit; a dent; a depression; a fissure.

An opening that goes all the way through a solid body, a fabric, etc.; a perforation; a rent.

(golf) A subsurface standard-size hole, also called cup, hitting the ball into which is the object of play. Each hole, of which there are usually eighteen as the standard on a full course, is located on a prepared surface, called the green, of a particular type grass.

(golf) The part of a game in which a player attempts to hit the ball into one of the holes.

(baseball) The rear portion of the defensive team between the shortstop and the third baseman.

(chess) A square on the board, with some positional significance, that a player does not, and cannot in future, control with a friendly pawn.

(stud poker) A card (also called a hole card) dealt face down thus unknown to all but its holder; the status in which such a card is.

In the game of fives, part of the floor of the court between the step and the pepperbox.

(archaeology, slang) An excavation pit or trench.

(figuratively) A weakness; a flaw or ambiguity.

(informal) A container or receptacle.

(physics) In semiconductors, a lack of an electron in an occupied band behaving like a positively charged particle.

(computing) A security vulnerability in software which can be taken advantage of by an exploit.

(slang, anatomy) An orifice, in particular the anus. When used with shut it always refers to the mouth.

(Ireland, Scotland, particularly in the phrase "get one's hole") Sex, or a sex partner.

(informal, with "the") Solitary confinement, a high-security prison cell often used as punishment.

(slang) An undesirable place to live or visit.

(figuratively) Difficulty, in particular, debt.

(graph theory) A chordless cycle in a graph.

(slang, rail transport) A passing loop; a siding provided for trains traveling in opposite directions on a single-track line to pass each other.