dipstick
nounUK /ˈdɪp.stɪk/
US /ˈdɪp.stɪk/
A long stick used to check how much liquid is in something.
The mechanic pulled out the dipstick to check the oil level in the engine.
SYNONYMS
OTHER MEANINGS
2. A foolish or annoying person.
Don't be such a dipstick and read the instructions first.
3. A rod used to measure the depth of liquid in a tank or container.
He used a dipstick to see how much fuel was left in the drum.
4. A person who is not very smart.
That dipstick forgot his keys again.