throw a wrench in

lock someone up and throw away the key

To lock someone up in prison indefinitely.

monkey wrench

To introduce problems, to create unexpected trouble, to sabotage.

stone's throw

A short distance, roughly equivalent to how far a person can throw a stone.

throw a bone to

To provide support or assistance to, especially in one particular way or to a limited extent; to make a concession to.

throw a fit

To become angry, enraged, or upset; to act or react with an outburst, as by shouting, swearing, etc.

throw a kiss

To kiss one's hand, then make a gesture as if one was throwing the kiss in a direction towards the recipient.

throw a monkey wrench in the works

Synonym of throw a spanner in the works.

throw a monkey wrench into the works

Synonym of throw a spanner into the works.