My word is "dynamite" which has two meanings. 1)n. a powerful explosive made by soaking nitroglycerin in some absorbent, such as ammonium nitrate and wood pulp. 2)adj. outstanding, very exciting.

My question is - name the part of speech given in the first entry.

I don't understand what the question mean.

The abbreviation for the part of speech is given at the beginning of the definition.

The parts of speech are:
noun
verb
adjective
adverb
pronoun
preposition
conjunction
interjection