tighten

v 1: make tight or tighter; "Tighten the wire" [syn: {fasten}]

2: become tight or tighter; "The rope tightened"

3: restrict; "Tighten the rules"; "stiffen the regulations"

[syn: {stiffen}, {tighten up}, {constrain}]

4: narrow or limit; "reduce the influx of foreigners" [syn: {reduce}]