Seeds of a particular torrent refer to the currently active torrent clients that already has the complete file and is currently sharing the file with other peers. Such clients do not download any part of the file. Initially when a torrent is made there is only one seeder who has the full file.How does torrent download work?
Once connected, a BitTorrent client downloads bits of the files in the torrent in small pieces, downloading all the data it can get. Once the BitTorrent client has some data, it can then begin to upload that data to other BitTorrent clients in the swarm.