This is one source, but one needs to use several concordances, lexicons and other tools to get a feel for the actual meaning of the word, plus read the text and think about it, read some lessons on it from various Jewish sources (after all the Rabbi's are the learned experts on all things Torah based)
Here is another:
I have several of these in hardcopy which I use so am not familiar with any internet resources, but I looked this one up for you.
And the LORD God formed4 man [of] the dust of the ground,
So Adam was made first from red clay, dust, thusly earthy.