Definitions for: Canker

[n] an ulceration (especially of the lips or living of the mouth)
[v] infect with a canker
[v] become infected with a canker

Webster (1913) Definition: Can"ker (k[a^][ng]"k[~e]r), n. [OE. canker, cancre, AS.
cancer (akin to D. kanker, OHG chanchar.), fr. L. cancer a
cancer; or if a native word, cf. Gr. ? excrescence on tree, ?
gangrene. Cf. also OF. cancre, F. chancere, fr. L. cancer.
See cancer, and cf. Chancre.]
1. A corroding or sloughing ulcer; esp. a spreading
gangrenous ulcer or collection of ulcers in or about the
mouth; -- called also water canker, {canker of the
mouth}, and noma.

2. Anything which corrodes, corrupts, or destroy.

The cankers of envy and faction. --Temple.

3. (Hort.) A disease incident to trees, causing the bark to
rot and fall off.

4. (Far.) An obstinate and often incurable disease of a
horse's foot, characterized by separation of the horny
portion and the development of fungoid growths; -- usually
resulting from neglected thrush.

5. A kind of wild, worthless rose; the dog-rose.

To put down Richard, that sweet lovely rose. And
plant this thorm, this canker, Bolingbroke. --Shak.

Black canker. See under Black.

Can"ker (k[a^][ng]"k[~e]r), v. t. [imp. & p. p.
Cankered (-k[~e]rd); p. pr. & vb. n. Cankering.]
1. To affect as a canker; to eat away; to corrode; to

No lapse of moons can canker Love. --Tennyson.

2. To infect or pollute; to corrupt. --Addison.

A tithe purloined cankers the whole estate.

Can"ker, v. i.
1. To waste away, grow rusty, or be oxidized, as a mineral.

Silvering will sully and canker more than gliding.

2. To be or become diseased, or as if diseased, with canker;
to grow corrupt; to become venomous.

Deceit and cankered malice. --Dryden.

As with age his body uglier grows, So his mind
cankers. --Shak.

See Also: come down, infect, sicken, ulcer, ulceration

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