The Collaborative International Dictionary of English v.0.48:
Cumber \Cum"ber\ (k?m"b?r), v. t. [imp. & p. p. Cumbered
(-b?rd); p. pr. & vb. n. Cumbering.] [OE. combren,
cumbren,OF. combrer to hinder, from LL. cumbrus a heap, fr.
L. cumulus; cf. Skr. ?? to increase, grow strong. Cf.
To rest upon as a troublesome or useless weight or load; to
be burdensome or oppressive to; to hinder or embarrass in
attaining an object, to obstruct or occupy uselessly; to
embarrass; to trouble.
Why asks he what avails him not in fight,
And would but cumber and retard his flight? --Dryden.
Martha was cumbered about much serving. --Luke x. 40.
Cut it down; why cumbereth it the ground? -- Luke xiii.
The multiplying variety of arguments, especially
frivolous ones, . . . but cumbers the memory. --Locke.