Receptacle meaning : A container. The part of the flower stalk (peduncle or pedicel) to which the floral parts are attached; a thalamus, a torus. A structure at the end of a branch of an alga containing conceptacles (reproductive organs). An organ that receives and holds a secretion. A contact device installed at an outlet for the connection of an attachment plug (typically by receiving the plug's prongs) to supply portable appliances or equipment.