An Interstice

1. A small opening or space between objects, especially adjacent objects or objects set closely together, such as between cords in a rope, components of a multiconductor electrical cable or atoms in a crystal.
2. (figurative) A fragment of space.
3. An interval of time required by the Roman Catholic Church between the attainment of different degrees of an order.
4. (by extension) A small interval of time free to be spent on activities other than one's primary goal.

Synonyms

• (small opening or space between objects): A Chink, A Crack, A Cranny, A Crevice, A Fissure, A Gap, interstitial space, A Slit