trof·fer 
(trŏfər, trôfər)
(trŏfər, trôfər)n.
An inverted, usually metal trough suspended from a ceiling as a fixture for fluorescent lighting tubes.
[Alteration of TROUGH.]
- subsister
- subsoil
- subsoiler
- subsolar
- subsonic
- subsp.
- subspecialist
- subspecialization
- subspecialize
- subspecialty
- subspecies
- subspecific
- subst.
- substage
- substance
- substance abuse
- substance abuser
- substance P
- substance use disorder
- substandard
- substantia gelatinosa
- substantial
- substantiality
- substantially
- substantialness