1.Tarawih: extra prayers that are performed after `isha' during Ramadan. They are usually performed in congregation and as much of the Qur'an as possible is recited during these prayers.
2.tasbih: saying "subhan-Allah" ("Glory be to Allah").
3.`ulama' (singular: `alim): scholars, people of knowledge.
4.ummah: community or nation, the body of Muslims as a distinct and integrated entity. The ummah of Islam is not based on language, race or ethnicity, but encompasses everyone who believes in Allah alone and in the Prophethood of Muhammad (PBUH).
5.`umrah: the "lesser pilgrimage," consisting of fewer rites than Hajj. `Umrah may be performed at any time of the year.
6.wahy: revelation, inspiration.
7.wajib: obligatory, compulsory.
8.witr: a prayer which has an odd number of rak`ahs. It is offered last thing at night before sleeping, or following tahajjud.
9.wudu': "partial" ablution which is required before prayer if one has passed wind, urine or stools.
10.Yawm `Arafah: the 9th day of the Islamic month of Dhu`l-Hijjah. In the most essential part of Hajj, the pilgrims spend this day standing and praying at `Arafah, a mountain and plain outside Makkah. Muslims who are not on Hajj may observe this sacred day by fasting (this fast is optional but is encouraged).
11.zakat: "poor-due" or "charity-tax." Muslims whose wealth is above a certain limit must pay a percentage of it (in most cases 2.5%) to the poor and needy. Zakat is one of the pillars of Islam.
12.zulm: oppression, wrongdoing