pit

1 pit /ˈpɪt/ noun
plural pits
1 pit
/ˈpɪt/
noun
plural pits
Britannica Dictionary definition of PIT
1 
[count] : a hole in the ground usually made by digging
2 
[count]
a  : a large, deep hole in the ground from which stones or minerals are dug out — see also sandpit
b  chiefly British : a coal mine
3 
[count] : something that uses up or holds a very large amount of money, food, information, etc.
4 
[count] : an area separated from and often placed below the areas next to it: such as
a  : an outdoor area where food is cooked
b  US : an area where particular investments are traded
c  : an area where animals are brought to fight
d  : the space in a theater where an orchestra plays
e  : an area of dirt or grass used for playing certain games
f  : mosh pit
g  : an area beside a racetrack used for servicing cars during a race — usually plural — see also pit stop
5 
[count] : a small hole or dent on the surface of something
6 
a  [count] : a very bad or unpleasant place or situation — usually + of
b  the pits informal : something that is very bad or unpleasant
7 
[count] informal : armpit

the pit of your/the stomach

: the part of a person's stomach where strong feelings of nervousness, excitement, etc., can be felt
2 pit /ˈpɪt/ verb
pits; pitted; pitting
2 pit
/ˈpɪt/
verb
pits; pitted; pitting
Britannica Dictionary definition of PIT
1 
[+ object] : to make small holes or dents in (something) — see also pitted 2
2 
[no object] car racing : to make a pit stop

pit against

[phrasal verb]
pit (someone or something) against (someone or something)
: to cause (someone or something) to fight or compete against (another person or thing)
3 pit /ˈpɪt/ noun
plural pits
3 pit
/ˈpɪt/
noun
plural pits
Britannica Dictionary definition of PIT
[count] US
: the hard middle part of a fruit : stone — see color picture on this page
4 pit /ˈpɪt/ verb
pits; pitted; pitting
4 pit
/ˈpɪt/
verb
pits; pitted; pitting
Britannica Dictionary definition of PIT
[+ object] chiefly US
: to remove the pit from (a piece of fruit) — see also pitted 1