A pneumatic, electric or hydraulic drilling machine to which is connected a string of helical augers and a cutting head, used to bore holes in the earth, into which a pile section or a tieback is set or concrete is cast-in-place.
French: pieu à la tarière continue creuse (CFA)
German: Schneckenbohrpfahl
Italian: palo trivellateo ad elica continua
Portuguese: estaca executada com trado contínuo (CFA)
Dutch: avegaarpaal