The Collaborative International Dictionary
Dive \Dive\, v. i. [imp. & p. p. Dived, colloq. Dove, a relic of the AS. strong forms de['a]f, dofen; p. pr. & vb. n. Diving.] [OE. diven, duven, AS. d?fan to sink, v. t., fr. d?fan, v. i.; akin to Icel. d?fa, G. taufen, E. dip, deep, and perh. to dove, n. Cf. Dip.]
To plunge into water head foremost; to thrust the body under, or deeply into, water or other fluid.
It is not that pearls fetch a high price because men have dived for them.
Note: The colloquial form dove is common in the United States as an imperfect tense form.
All [the walruses] dove down with a tremendous splash.
When closely pressed it [the loon] dove . . . and left the young bird sitting in the water.
Fig.: To plunge or to go deeply into any subject, question, business, etc.; to penetrate; to explore.
vb. 1 (en-past of: dive) (gloss: scuba diving) 2 (past participle of dive English) (gloss: jump head-first)