thirl (verb, archaic):
1. to pierce, bore through, or make a hole—especially in something solid like rock or wood.
2. (noun, dialectal): a small opening, perforation, or nostril (Scots origin).
Etymology: Old English þyrlian (“to pierce”), related to þyrel (“hole”), which is also the root of thrill (originally “to pierce with emotion”).
Example (archaic usage):
“He thirled the wall with a dagger’s point, peering through the stone.”