Obs. Also 5 baste, baaste. [a. OF. bast (mod. bât = Pr. bast, med.L. bastum) pack-saddle (used as a bed by muleteers in the inns), in phr. fils (homme, etc.) de bast, lit. pack-saddle child, as opposed to a child of the marriage-bed; thus forming a tersely allusive epithet for illegitimate offspring: cf. BASTARD, BANTLING.]
A. sb. Bastardy. (In phr.: on, in, a, o, of bast.)
1297. R. Glouc., 516. Gentil man was inou, thei he were a bast ibore.
c. 1330. Arth. & Merl., 7643. Bast Ywain he was y-hote, For he was bigeten o bast.
c. 1430. Lydg., Bochas, III. xxvi. (1554), 97 b. Hys brethren in bast an hundred and fiftene.
c. 1440. Promp. Parv., 26. Baaste, not wedlocke, bastardia.
1494. Fabyan, VI. ccii. 212. Arnolde, Sone of bast of Lothayr.
B. adj. [the sb. used attrib.: bast son = son of bast, fils de bast.] Bastard, illegitimate.
c. 1330. [see prec.]
1387. Trevisa, Higden, Rolls Ser. VII. 27. Þe erle his bast sone.
1494. Fabyan, VII. ccxix. 240. Willyam duke of Normandye bast sone of Robert.
1572. Scholehouse Wom., 324, in Hazl., E. P. P., IV. 117. The childe I warrant shalbe bast.