1wrench 
/ˈrɛntʃ/ noun
plural wrench·es /ˈrɛntʃ/ noun 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)
▪ an adjustable wrench —called also (Brit) spanner; — see picture at carpentry; see also monkey wrench, socket wrench 2 [count] : a violent twisting or pulling movement — usually singular ▪ He snapped the tree's thick root with a wrench of the shovel. 3 [singular] chiefly Brit : something unpleasant that happens and that causes you to feel emotional pain
▪ It was a wrench to say goodbye to all my friends.
▪ an adjustable wrench —called also (Brit) spanner; — see picture at carpentry; see also monkey wrench, socket wrench
▪ It was a wrench to say goodbye to all my friends.
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
▪ We were going to renew our lease, but the landlord threw a wrench into the works [=(Brit) threw a spanner into the works] by increasing the rent.
▪ We were going to renew our lease, but the landlord threw a wrench into the works [=(Brit) threw a spanner into the works] by increasing the rent.
