1. (n.) A small opening between things closely set; a pore; a crack; a crevice; an interval; as, the interstices of a wall\.

2. (n.) 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.

caesura clearance discontinuity distance between double space em space en space freeboard hair space half space hiatus interim intermediate space interruption interspace interval jump lacuna leap leeway margin room single space space space between time interval