Thule, Ultima Thule, ankle, articulation, balustrade, barrier, bisector, bitter end, border line, bordering, borderline, borders, bottom dollar, bound, boundary
line, bounding, bounds, bourn, break boundary
, breakoff point, butt, butt end, caesura, caudal, ceiling, cervix, circumscription, clinch, closure, coastal, colon, comma, compass, conclusive, confine, confinement, confines, connecting link, connecting rod, connection, continence, coupling, cutoff, cutoff point, deadline, definitive, delimitation, determinant, determinative, determining, diameter, discipline, divider, division line, dovetail, elbow, embrace, end, endmost, equator, eventual, extreme, extremity, fag end, farthest, farthest bound, fence, final, finish, floor, fringing, frontier, frontiers, gliding joint, halfway mark, hedge, high-water mark, hinge, hinged joint, hip, interface, join, joining, joint, jumping-off place, juncture, knee, knuckle, last, limbic, limen, liminal, limit, limitation, limiting, limiting factor, limits, line, line of demarcation, link, littoral, low-water mark, lower limit, march, marginal, mark, mete, miter, moderation, mortise, neck, nib, partition, pause, perimeter, period, pivot, pivot joint, point, polar, pole, precincts, prescription, proscription, purlieus, qualification, rabbet, rail, railing, restrain, restriction, rimming, scarf, seam, semicolon, shoulder, skirting, start, starting line, starting point, stitch, stone wall, stop, stub, stump, suture, symphysis, tag, tag end, tail, tail end, target date, term, terminal, terminal date, terminating, terminative, terminus, threshold, tie rod, time allotment, tip, toggle, toggle joint, ultimate, union, upper limit, wall, weld, wrist
, bounds, confine, enclave, term, bourn, verge, curbstone, but, pale, reservation, termination, terminus, stint, frontier, precinct, marches, backwoods, boundary
line, landmark, line of demarcation, line of circumvallation, pillars of Hercules, Rubicon, turning point, ne plus ultra, sluice, floodgate, definite, conterminate, conterminable, terminal, frontier, bordering, thus far, thus far and no further, stick to the reservation, go beyond the pale, Special.