trigger fingerWiktionary 原文构词拆分trigger词根/词干+finger词根/词干词源说明From trigger + finger.释义（英文）名词 Nouna finger used in pulling the trigger of a firearmthe forefinger(medicine) difficulty encountered in finger flexion or extension caused by the narrowing of the sheath that surrounds that finger's tendon词族派生词（1）itchy trigger finger