a hollow, cylinder-shaped piece of equipment used for sucking liquid out of something or pushing liquid into something, especially one with a needle that can be put under the skin and used to inject drugs, remove small amounts of blood, etc.
syringe
verb[ T ]UKuk/sɪˈrɪndʒ/us/səˈrɪndʒ/
（用注射器）灌洗（耳朵）
to clean the inside of the ears by pushing water into them and then sucking it out of them using a syringe