1. trans. To work at; to compose (a book).
1387. Trevisa, Higden (1865), I. Þis storie is bytrauailled by cause of Brytayne. Ibid., I. xlviii. (1527), 47 b. Cyte of legyons there this Cronycle was bytravaylled.
2. To work for; to earn by labor.
1393. Langl., P. Pl., C. IX. 242. With swot and swetynge face By-tulye and by-trauaile treuly, oure lyf-lode. Ibid., XVI. 210. For no bred þat ich by-trauaile.
3. To do violence to, to violate.
1388. Wyclif, Judg. xx. 5. Thei bitraueliden my wijf with vnbileueful woodnesse of letcherie.