- 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; as, the interstices of a wall. - 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.
Meaning of 'interstice' (Princeton's WordNet)
1 . interstice
[ n]
Meaning (1): - a small structural space between tissues or parts of an organ