Related Clues:

• Open enough to peep through
• Admitting just a little light, maybe
• Barely allowing access
• Not shut
• Open just a little
• Opened a bit
• Shy of being shut
• Not completely shut, as a door
• Allowing a little light in
• Letting in a bit of light
• Somewhat open
• Not locked
• Not shut all the way
• Letting in a draft, say
• Open just a bit