n. A frame or rack for allowing washed crockery etc to dry naturally
n. A person who explores drains, tunnels, and/or sewers
the GNU version of the Collaborative International Dictionary of English
n. One who, or that which, drains.
The Century Dictionary and Cyclopedia
n. One who drains; one who constructs channels for draining land: as, a ditcher and drainer.
n. A natural or artificial channel by which drainage is effected.
n. A vessel or bag in which moist substances are put to drain.
Word Usage
"When the painfully named Retro Girl winds up dead, Homicide Detectives Christian Walker and Deena Pilgrim bring in their prime suspect and interrogate him under a “drainer” — a vent-shaped machine that emits superpower-draining light."