Meaning: Its source is a Scots Gaelic expression meaning "Twin."

Languages: This boy's name is used in Vietnamese and Scots Gaelic.

Nickname For: Thomas

Narrative: In Vietnamese, the name derives from an expression meaning ''Eight.'' In Scots Gaelic, the name is used as a short form of Thomas, an English name derived from an Aramaic expression meaning ''Twin.''

Languages: This girl's name is used in Hebrew, English and Vietnamese.

Nickname For: Tamar, Tamara and Tammy

Popularity: The name Tam ranked 2706th in popularity for females of all ages in a sample of the 1990 US Census.

Narrative: For Vietnamese speakers, it is derived from an expression meaning ''Heart.''

For Hebrew and English speakers it is a nickname for Tamara and Tammy, both derived from Tamar, a Hebrew name meaning ''Date palm.''