border line, bound, boundary, boundary condition, boundary line, bounding, bourn, break boundary, breakoff point, ceiling, circling-in, circumscribing, circumscription, compass, confine, cutoff, cutoff point, deadline, definition, demarcation, determinant, determination, division line, encincture, end, extremity, finish, floor, frontier, hedge, high-water mark, inclusion-exclusion, interface, limen, limit, limitation, limiting factor, line, line of demarcation, low-water mark, lower limit, march, mark, mete, specification, start, starting line, starting point, target date, term, terminal date, terminus, threshold, time allotment, upper limit