Shallow

1. v. i. To become shallow, as water.
2. superl. Not deep; having little depth; shoal.
3. superl. Not deep in tone.
4. superl. Not intellectually deep; not profound; not penetrating deeply; simple; not wise or knowing; ignorant; superficial; as, a shallow mind; shallow learning.
5. n. A place in a body of water where the water is not deep; a shoal; a flat; a shelf.
6. n. The rudd.
7. v. t. To make shallow.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.