於菟 wūtú tiger Origin Definitions Defs Strokes Stroke Words Sentences Sents 於 wū opaque (segment carries no independent meaning) [sigh] (literary) an exclamation expressing strong emotion; oh; ah菟 tú opaque (segment carries no independent meaning) [bound form] (bound form) used in ancient terms for a tiger, as in 於菟 wūtú