Lexical Definition

‎רָצַד‎ râtsad (raw-tsad') to watch with envy ^H:V
a primitive root

leap.

• probably to look askant, i.e. (figuratively) be jealous

1) (Piel) to watch stealthily or with envious hostility, watch with enmity, watch with envy

Brown-Driver-Briggs

[‎רָצַד‎] verb Pi`el watch stealthily, or with envious hostility (Arabic watch or wait (often lie in wait) for; ‎ירצר‎ Eccl 14:22 observe stealthily, so once Aramaic ‎רְצַר‎ Levy^{NHWB iv. 464}); — only Imperfect 2 masculine plural ‎תְּרַצְּדוּן‎ Ps 68:17* (figurative of mountains, with accusative).

Brown-Driver-Briggs References