spanner

Universal Words (BrE) (also wrench AmE, BrE) noun a metal tool with a specially shaped end for holding and turning NUTS and BOLTS (= small metal rings and pins that hold things together): I'll need a spanner to change the back wheel. compareADJUSTABLESPANNER IDIOMS (throw) a spanner in the works (BrE) (AmE )throw( a )monkey( wrench in the works) (to cause) a delay or problem with sth that sb is planning or doing