1. A space, especially a small or narrow one, between things or parts: "there is a gleam of luminous gold, where the sinking western sun has found a first direct interstice in the clouds” ( john Fowles).

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

1. that which intervenes between one thing and another; especially, a space between things closely set, or between the parts which compose a body; a narrow chink; a crack; a crevice; a hole; an interval.
2. an interval of time; specifically (R. C. ch.), in the plural, the intervals which the canon law requires between the reception of the various degrees of orders.

1. an intervening space; an opening; especially, a small or narrow space between apposed surfaces or things; a gap, chink, slit, crevice, or cranny.
2. in canon law, the interval of time required for promotion from a lower to a higher degree of orders.

1. a small structural space between tissues or parts of an organ
2. small opening between things