Other forms: toenails
A toenail is the hard plate on the end of a toe. Cut your toenails, an ingrown toenail, a broken toenail.
Cutting it straight across rather than curved is what prevents an ingrown one, which is the single most useful piece of foot advice there is. Toenails grow about half as fast as fingernails, so a damaged one takes a year to replace.
1nountoenailThe hard plate on the end of a toe.
“He dropped a brick on his big toe and lost the toenail.”
toenail is a nail.
Toe plus nail, both Old English words. Nail names the plate and the metal spike alike, from the same root.
From toe + nail.
Etymology from Wiktionary, CC BY-SA