How many syllables in stoat?

Definition of stoat:

stoat (noun):

noun. the ermine in its brown summer coat with black-tipped tail.

the common ermine (mustela erminea) chiefly of northern eurasia and north america that is brown above and white below in summer and in its northern range all white in winter and that ranges from 9 to 15 inches (23 to 38 centimeters) in length including a black-tipped tail that is usually 1 ½ to 3 ½ inches (3.8 to 9 centimeters) long ermine sense 1a, short-tailed weasel