The 15th letter of the Hebrew alphabet

Wiktionary Word definitions in Wiktionary
alt. The fifteenth letter of many Semitic alphabets/abjads (Phoenician, Aramaic, Hebrew, Syriac, Arabic and others). n. The fifteenth letter of many Semitic alphabets/abjads (Phoenician, Aramaic, Hebrew, Syriac, Arabic and others).

WordNet Word definitions in WordNet
n. the 15th letter of the Hebrew alphabet

Wikipedia Word definitions in Wikipedia
Samekh or Simketh is the fifteenth letter of many Semitic abjads , including Phoenician Ṣāmek , Hebrew ˈSamekh , Aramaic Semkath , Syriac Semkaṯ ܣ, representing . The Arabic alphabet , however, uses a letter based on Phoenician Šīn to represent (see there);...