pioneer

1. (military) A soldier detailed or employed to form roads, dig trenches, and make bridges, as an army advances; a sapper.Examples: "[King of] Fess. What thinks your greatnes beſt to be atchieu’d In purſuit of the Cities ouerthrow? Bai[azeth]. I wil the captiue Pioners of Argier, Cut off the water, that by leaden pipes Runs to the citie from the mountain Carnon, […]"

2. (communism) A member of a children’s organization operated by the Communist Party, typically in the second of three stages toward becoming a member of the Party itself.

3. (Singapore) Alternative letter-case form of Pioneer (“A Singaporean born on or before 31 December 1949, who is entitled to various healthcare and social support schemes.”).Examples: "Perhaps the pioneer generation, having experienced unity in solidarity, will show the rest of Singapore the way."; "A fenceless open-air museum […] that captures the spirit and struggles of Singapore's pioneer generation."Singaporealt-of