Anagrams of: IIORRST

• the cardinal number that is the sum of one and one and one

• a musical composition for three performers

• three performers or singers who perform together

• a set of three similar things considered as a unit

• three people considered as a unit

• someone new to a field or activity

• German iris having large white flowers with lavender-tinged falls and a fragrant rhizome

• fragrant rootstock of various irises especially Florentine iris; used in perfumes and medicines

• A traditional Japanese gate at Shinto shrines, symbolically marking the transition from the profane to the sacred.

• a public act of violence by an unruly mob

• a state of disorder involving group violence

• a joke that seems extremely funny

• a wild gathering involving excessive drinking and promiscuity

• take part in a riot; disturb the public peace by engaging in a riot

• engage in boisterous, drunken merrymaking

• A kind of unleavened flatbread commonly consumed in South Asia and the Caribbean.

• The main part of the (human) body that extends from the neck to the groin, excluding the head and limbs.

• a unit of pressure equal to 0.001316 atmosphere; named after Torricelli

• a category of things distinguished by some common characteristic or quality

• an approximate definition or example

• a person of a particular character or nature

• an operation that segregates items into groups according to a specified criterion

• examine in order to test suitability

• arrange or order by classes or categories