I filled the slot- what does the sentence mean? -

A thin opening or groove in something is a slot You can put letters and postcards through the mail slot at the post office

Prior to 2007, the Airports Authority of India was allocating slots to international & domestic airlines (except Cochin airport, for which the slot

invaders from the planet moolah slot machine 1 a narrow notch, groove, or opening, as a keyway in a piece of machinery, a slit for a coin in a vending machine, etc 2

inject slot pragmatic noun A narrow depression , perforation , or aperture ; especially, one for the reception of a piece fitting or sliding in it