Wiktionary
THIRL, noun. (archaic or dialectal) A hole, aperture, especially a nostril.
THIRL, verb. To pierce, perforate, penetrate.
THIRL, verb. (obsolete) To drill or bore.
THIRL, verb. (obsolete) To throw (a projectile).
Wise words
In the End, we will remember not the words of our enemies,
but the silence of our friends.
