What made you want to look up micturate? Please tell us where you read or heard it (including the quote, if possible).
stir1. 1  to move one's hand or an implement continuously or repeatedly through (a liquid or other substance) in order to cool, mix, agitate, dissolve, etc., any or all of the component parts: to stir one's coffee with a spoon. 2  to set in tremulous, fluttering, or irregular motion: A soft breeze stirred the leaves.
straw that stirs the drink â(plural straws that stir the drink) (idiomatic, almost always preceded by the) The person who stimulates or inspires a group; the major factor affecting a trend or set of developments. 1977 May 26, Dave Anderson, Reggie's woes, Star-News (North Carolina, USA), p. 7D (retrieved 19 Oct 2012): Reggie Jackson .