เอก

Numeral

 * 1)  "one"

Etymology
From or.

Adjective

 * 1) sole; single; solitary; one; alone; lonely.
 * 2) chief; first; prime.
 * 3) leading; great; excellent; outstanding.
 * 4) important; main; principal.

Noun

 * 1) first; one; chief.
 * 2) low tone; first tone.

Prefix

 * 1) first; one; chief.