0 being only a small distance from one side to the other -- estrecho
1 with little distance between the two edges -- estrecho/cha [ masculine-feminine, singular ]
2 indicates sth almost did not happen -- por un pelo [ singular ]
3 limited or not varied -- escaso/sa [ masculine-feminine, singular ]
4 very small in size or number -- corto/ta [ masculine-feminine, singular ]
to win by a narrow margin/majority ganar por un margen estrecho/mayoría
5 to become narrow -- estrecharse