- Barbed wire that is extended in a spiral for use as a barrier, as on a fence.蛇笼，蛇腹型铁丝网：用作屏障的成螺旋状延伸、装有倒勾的金属丝网，如在栅栏上
- dichromate
- dichromatic
- dichromatism
- dichromatisms
- unaccentuated
- unacceptable
- unaccommodated
- unaccompanied
- unaccomplished
- unaccountable
- unaccounted-for
- unaccredited
- unaccustomed
- unachievable
- unacknowledged
- una corda
- unacquainted
- unaddressed
- unadjusted
- unadoptable
- unadorned
- unadulterate
- unadulterated
- unadventurous
- unadvertised