Definition of "groove" []

• A long narrow furrow or channel. (noun)
• The spiral track cut into a phonograph record for the stylus to follow. (noun)
• Slang A settled routine: got into the groove of a nine-to-five job. (noun)
• Slang A situation or an activity that one enjoys or to which one is especially well suited: found his groove playing bass in a trio. (noun)
• Slang A very pleasurable experience. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "On each side of this surface is to be seen a distinct groove, the _preplantar groove_, or _preplantar fissure_, which, commencing behind, between the basilar and retrossal processes, runs horizontally forwards from the angles or wings of the bone, and terminates anteriorly in one of the larger foraminæ."
• "Because a groove is a terrible thing to waste, this sonic learning institution will be unlike anything before, as Professor Collins and the finest bassists in music will unleash an intense curriculum, on the web, for intermediate to advanced funk disciples within the program."
• "Well, apart from being half-dead this morning, I think I'm starting to get back into the "early-risin '" groove, which is prolly a good thing."