Longman Dictionary of Contemporary English
mixer tap
noun
EXAMPLES FROM CORPUS
▪ Replace the taps To fit the new mixer tap follow step 2 in reverse.
Wiktionary
mixer tap
n. A tap in which the amount of hot and cold water emerging from a single outlet can be independently varied, usually with a lever
Usage examples of "mixer tap".
The single mixer tap was a brilliant, invaluably useful and ingeniously simple innovation.