1) to examine (a thing) carefully in order to learn something about it (analyse)

2) looking and listening carefully (attentive)

3) something carefully designed and made for a particular purpose such as an instrument or a small piece of technical equipment (device)

4) to look at (a person, thing) carefully in order to learn something; to put questions to (a person) in order to test knowledge or get information (examine)

5) a test or trial carried out carefully in order to study what happens and gain new knowledge (experiment)

6) a carefully saved and guarded store or collection of money, coins, food and other treasured or valuable objects; to save and store (money, valuable things) (hoard)

7) to examine, study, (something) carefully (investigate)

8) to think about something carefully (mull)

9) the act, state, of observing or being observed; the power of noticing carefully (observation)

10) (an act of) reading something carefully (perusal)