Any of various types of nails with large flat heads designed to fasten sheet metal to wood, fasten clouts to axletrees, etc., often clinched.
A pointed upper corner of the toenail (often created by improperly trimming by rounding the corner) that, as the nail grows, presses into the flesh or protrudes so that it may catch (“hang”) on stockings or shoes.
A loose, narrow strip of nail tissue protruding from the side edge and anchored near the base of a fingernail or toenail.