vbl. sb. Obs. [f. BUMBLE v.1 and v.2 + -ING1.]

1

  a.  Blundering. b. Buzzing, humming.

2

1533.  More, Answ. Poyson. Bk., Wks. (1557), 1088/2. Tyndall dydde … make some bumlyng aboute a colour for the matter.

3

1556.  J. Heywood, Spider & Fl., lxiv. 71. Much bumbling among them all [flies]: there was.

4

1693.  Urquhart, Rabelais, III. xiii. Bumbling of Bees.

5