WordNet sense 1 (one of the outstanding players in a tournament):

seeded player

WordNet sense 2 (anything that provides inspiration for later work):

germ, source

WordNet sense 3 (the thick white fluid containing spermatozoa that is ejaculated by the male genital tract):

come, ejaculate, semen, ejaculate, seminal fluid

WordNet sense 4 (place (seeds) in or on the ground for future growth):

sough, sow, sow