This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. A person or thing that causes something to circulate

n. A local transit system that provides regular service within a closed loop

n. A passive electronic component with three or more ports, in which the ports can be accessed in such a way that when a signal is fed into any port it is transferred to the next port only

n. One who, or that which, circulates.

n. One who or that which circulates: specifically applied to a circulating decimal fraction. See decimal.

n. A juggler; a mountebank; one who goes about showing tricks.

n. A function of two whole numbers, a variable, q, and a period, a, of the form where aq, etc., are circulating elements, and A0, etc., are numerical coefficients. Also called circulating function.

prime circulator   

defrost    wash-deck    doorsill    furbish    spinifex