Thesaurus

(n) : a solid, more or less rigid object with a uniform cross-section smaller than its length; a solid metal object with uniform (round, square, hexagonal, octagonal or rectangular) cross-section, whose smallest dimension is .25 inch or greater (US), a piece of thinner material being called a strip

(v) : to obstruct the passage of (someone or something); to prohibit

(preposition) : Except, with the exception of