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dog-eared: (of a book) used so much that the corners of many of the pages are turned down

distillation: (formal) the process or result of getting the essential meaning, ideas or information from something

advancement: progress in a job, social class, etc.

boot camp: a training camp for new members of the armed forces, where they have to work hard

filbert: a type of hazel tree that produces oval nuts

pecan: the nut of the American pecan tree with a smooth pink-brown shell

daunting: making somebody feel nervous and less confident about doing something; likely to make somebody feel this way

tally: a record of the number or amount of something, especially one that you can keep adding to

parameter: ​something that decides or limits the way in which something can be done

pistol: a small gun that you can hold and fire with one hand

If you say that a person, a team, an organization, etc. has bragging rights, you mean that they have achieved a good result or are better or more successful than their competitors or opponents at that time.

steep: sudden and very big

pitch: to set something at a particular level

hash mark: service stripe

service stripe: a stripe worn on an enlisted person's left sleeve to indicate three years of service in the army or four years in the navy

perennial: ​continuing for a very long time; happening again and again

Bill Gates "Source Code"

Online Dictionaries Used:

hk.dictionary.search.yahoo.com

www.oxfordlearnersdictionaries.com

www.merriam-webster.com