Why was "tantrum" trending last week?
"pertaining to a nail or claw," 1834, from Latin unguis "a claw, nail" (cognate with Greek onyx, Old English nægel, Old Norse nagl "nail;" see nail (n.)).
subungual sub·un·gual (sŭb-ŭng'gwəl) or sub·un·gui·al (-gwē-əl)adj. Beneath a fingernail or toenail.
ungual un·gual (ŭng'gwəl)adj. Of or relating to fingernails or toenails.