What is the meaning of Lähteä?

to leave, go, go away, set off, take off, depart, sail

to begin, start, start out, start off (often with more contrast than mennä, alkaa, ryhtyä etc.)

to come out, come off, shed, fall out

to come from, stem (from), originate (from)

to send, be sent

to go

to leave, to depart

to exit

Source: wiktionary.org