Slade

Slade comes from an English surname based on an old word for a valley. The surname could describe someone who lived in or near such a landscape, so its nature connection is direct rather than symbolic. As a first name, it keeps the compact shape and firm consonants of that older geographical word.

The single syllable gives Slade a very different feel from softer landscape names such as Meadow or River. Slayde is an alternative spelling, although Slade follows the established surname form. Some families will recognize it from comic-book characters or the British rock band. Those associations are separate from the valley meaning, which may be the most useful starting point when deciding whether it fits.