a casualty to military personnel resulting from combat
a figurative injury (to your feelings or pride); "he feared that mentioning it might reopen the wound"; "deep in her breast lives the silent wound"; "The right reader of a good poem can tell the moment it strikes him that he has taken an immortal wound--that he will never get over it"--Robert Frost
any break in the skin or an organ caused by violence or surgical incision
an estimation that is too low; an estimate that is less than the true or actual value
make too low an estimate of; "he underestimated the work that went into the renovation"; "Don't underestimate the danger of such a raft trip on this river"