wrench

1 wrench /ˈrɛntʃ/ noun
plural wrenches
1 wrench
/ˈrɛntʃ/
noun
plural wrenches
Britannica Dictionary definition of WRENCH
1 
[count] US : a tool consisting of a handle with one end designed to hold, twist, or turn an object (such as a bolt or nut)
— called also (British) spanner
— see picture at carpentry; see also monkey wrench, socket wrench
2 
[count] : a violent twisting or pulling movement — usually singular
3 
[singular] chiefly British : something unpleasant that happens and that causes you to feel emotional pain

throw a wrench into the works

US, informal
: to damage or change (something) in a way that ruins it or prevents it from working properly
2 wrench /ˈrɛntʃ/ verb
wrenches; wrenched; wrenching
2 wrench
/ˈrɛntʃ/
verb
wrenches; wrenched; wrenching
Britannica Dictionary definition of WRENCH
1 
: to twist and pull with a sudden violent motion
[no object]
[+ object]
— often used figuratively
2 
[+ object] : to injure (a part of your body) by making a violent twisting motion
3 
[+ object] : to take (something) by using force
— often used figuratively