dry-visioned Arhats (Pāli, sukkha-vipassaka). Term used in Pāli sources to refer, according to the commentaries, to those who become Arhats through insight (vipaśyanā) alone without attaining any of the levels of trance (dhyāna).

A Dictionary of Buddhism, Oxford University Press, 2003, 2004 (which is available in electronic version from answer.com)