- filly
[filly 词源字典]
- filly: see foal
[filly etymology, filly origin, 英语词源] - filly (n.)
- c. 1400, filli, fyly, "a young mare, female colt or foal," possibly from Old Norse fylja, fem. of foli "foal" (see foal (n.)). Slang sense of "lively young girl" is from 1610s.