a successful ending of a struggle or contest; "a narrow victory"; "the general always gets credit for his army's victory"; "clinched a victory"; "convincing victory"; "the agreement was a triumph for common sense"
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"