Definition of "peak" []

• A tapering, projecting point; a pointed extremity: the peak of a cap; the peak of a roof. (noun)
• The pointed summit of a mountain. (noun)
• The mountain itself. (noun)
• The point of a beard. (noun)
• A widow's peak. (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.

• "We must do the same thing for the term peak oil, but it will be more challenging."
• "Every major Cascade (and Sierra) Mountain peak is an active but dormant volcano."
• "The term "peak" is typically used to describe maximum achievable download speeds in ideal conditions."