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- psychobiology
- psychodrama
- psychokinesis
- psychokinetic
- psychokinetically
- psychological
- psychologically
- psychologist
- psychology
- psychometric
- psychopath
- psychopathic
- psychopathically
- psychosis
- psychosomatic
- psychosomatically
- psychotherapist
- psychotherapy
- psychotic
- psychotically
- psychotropic
- PT
- pt.
- PTA
- PT boat