Allen wrenchAllen wrench /ˈælən rentʃ/ noun [countable] American English 
a tool used to turn an Allen screw SYN Allen key British English
a tool used to turn an Allen screw SYN Allen key British English- light-emitting diode
- lighten
- lighter
- light-fingered
- light green
- light-headed
- light-headedness
- light-hearted
- light-heartedly
- light-heartedness
- light heavyweight
- lighthouse
- light industry
- lighting
- lighting rig
- lightly
- light meter
- lightness
- lightning
- lightning bug
- lightning conductor
- lightning rod
- lightning strike
- light pen
- light pollution