Term: Holding Tank Image: [{"name":"images\/public\/dictionary\/Holding Tank_fyzxs7wu.png","usrName":"Holding Tank.png","size":17239,"type":"image\/png","thumbnail":"images\/public\/dictionary\/thHolding Tank_naoke1x5.png","thumbnail_type":"image\/png","thumbnail_size":17239,"searchStr":"Holding Tank.png,!:sStrEnd"}] Definition: Storage tank for gray water