|Noah Webster's Dictionary|
1. (a.) Wanting sight; without sight; blind.
2. (a.) That can not be seen; invisible.
3. (a.) Offensive or unpleasing to the eye; unsightly; as, sightless stains.
Sightless (1 Occurrence)
Isaiah 29:9 Be surprised and full of wonder; let your eyes be covered and be blind: be overcome, but not with wine; go with uncertain steps, but not because of strong drink. (See NIV)