Attack

1. n. The beginning of corrosive, decomposing, or destructive action, by a chemical agent.
2. v. t. To fall upon with force; to assail, as with force and arms; to assault.
3. v. t. To assail with unfriendly speech or writing; to begin a controversy with; to attempt to overthrow or bring into disrepute, by criticism or satire; to censure; as, to attack a man, or his opinions, in a pamphlet.
4. v. t. To set to work upon, as upon a task or problem, or some object of labor or investigation.
5. v. t. To begin to affect; to begin to act upon, injuriously or destructively; to begin to decompose or waste.
6. v. i. To make an onset or attack.
7. n. The act of attacking, or falling on with force or violence; an onset; an assault; — opposed to defense.
8. n. An assault upon one’s feelings or reputation with unfriendly or bitter words.
9. n. A setting to work upon some task, etc.
10. n. An access of disease; a fit of sickness.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.