noun

1. an openwork structure of crossed strips or bars of wood, metal, etc. used as a screen, support, etc.
2. something resembling or suggesting such a structure
3. a door, gate, shutter, trellis, etc. formed of such a structure
4. Physics
   1. a three-dimensional pattern of points in space, as of atoms or groups of atoms in a solid or crystal
   2. space lattice
   3. the arrangement in a geometric pattern of fissionable and nonfissionable material in a nuclear reactor

Etymology: ME latis < OFr lattis < latte < MHG < OHG latta: see lath

transitive verb latticed -·ticed, latticing -·tic·ing

1. to arrange like a lattice; make a lattice of
2. to furnish or cover with a lattice or latticework