forerunner
fore.run.ner \'fo-r-.r*n-*r, 'fo.r-\ n 1: one going or sent before to give notice of the approach of others : as 1a: a premonitory sign or symptom 1b: a skier who runs the course before the start of a race 2: PREDECESSOR, FOREBEAR n one who goes before or announces the coming of another. FORERUNNER is applicable to anything that serves as a sign or presage; PRECURSOR applies to a person or thing paving the way for the success or accomplishment of another; HARBINGER and HERALD both apply, chiefly figuratively, to one that proclaims or announces the coming or arrival of a notable event SYN syn FORERUNNER, PRECURSOR, HARBINGER, HERALD mea
Webster's English Dictionary