its a name.... But it doesn't have a meaning. all I know and could find that it is English. Could it be a nickname?

1) "tam⋅my1   [tam-ee] Show IPA –noun a fabric of mixed fibers, constructed in plain weave and often heavily glazed, used in the manufacture of linings and undergarments. Also, tammie. Origin: 1630–40; perh. back formation from obs. F tamise kind of glossy cloth (taken as pl.)" "Tammy Tam"my, n.; pl. Tammies. 1. A kind of woolen, or woolen and cotton, cloth, often highly glazed, -- used for curtains, sieves, strainers, etc. 2. A sieve, or strainer, made of this material; a tamis. Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc. Cite This Source tammy noun 1. plain-woven (often glazed) fabric of wool or wool and cotton used especially formerly for linings and garments and curtains 2. a woolen cap of Scottish origin [syn: tam] WordNet® 3.0, © 2006 by Princeton University. Cite This Source" Source and further information: http://dictionary.reference.com/browse/tammy 2) "Origin: Hebrew Meaning: Palm tree Origin: Indian Meaning: Spice Form of: Tamara" Source and further information: http://babynamesworld.parentsconnect.com/meaning_of_Tammie.html "Tammie's origin is Hebrew, and its use, English. Tammie is a pet form of Tamara (English, German, Hungarian, and Russian)." Source and further information: http://www.babynamespedia.com/meaning/Tammie 3) "Tammie A female given name, a spelling variant of Tammy." Source and further information: http://en.wiktionary.org/wiki/Tammie "Tammy A diminutive of Tamara and Tamsin. Popular as a female given name in the 1960s and the 1970s. [edit]Quotations 1957 Jay Livingston - Ray Evans, Tammy (a song) Wish I knew if he knew What I'm dreaming of Tammy, Tammy, Tammy's in love." Source and further information: http://en.wiktionary.org/wiki/Tammy "Tamara: Greek Orthodox saints' name from the twelfth century, probably a form of biblical Tamar, Hebrew "date palm"." Source and further information: http://en.wiktionary.org/wiki/Tamara "Tamsin A female given name, medieval form of Thomasina, a feminine form of Thomas; revived in the U.K. in the twentieth century." Source and further information: http://en.wiktionary.org/wiki/Tamsin "Thomas: From Ancient Greek Θωμᾶς, from Aramaic ܬܐܘܡܐ or תאומא (“Thomas”), from ܬܐܡܐ or תאמא (“twin”)." Source and further information: http://en.wiktionary.org/wiki/Thomas