| acuteness(noun, limit, boundary) |
| authority(noun, support, hold, break, drop) |
| band |
| blade(noun, sharp, tool) |
| borderland(noun, border) |
| bounding(adjective, limiting) |
| butt against(verb, expression, phrasal verb) |
| butt on(verb, expression, phrasal verb, move, end) |
| circumference(noun, outline, border, borderline, margin) |
| confines(noun, check, curb, limit, restraint) |
| cutting edge(noun, expression, idiom, advance, start) |
| deadline(noun, check, top, curb, limit) |
| ease(verb, move, advance, touch, defeat) |
| fence(noun, verb, check, curb, restraint) |
| file(verb, sharpen, whet, hone) |
| ill at ease(expression, idiom) |
| limitation(noun, control, check, top, curb) |
| marginal |
| odds(noun, support, hold, break, drop) |
| piquancy(noun, burn, spiciness, tartness) |