tiě​gǎntiě​gān

iron

铁杆 (鐵桿) tiě​gǎn frequency
die-hard noun
extremely loyal, zealous, or steadfast in one's allegiance

The few of them have been die-hard buddies for many years.

iron rod noun
a physical rod or bar made of iron

He used an iron rod to prop up the shaky window.

铁杆 (鐵桿) tiě​gān
iron noun
iron (golf club)

He hit a beautiful shot with this iron.

Frequency

Written text
6.31 per million

Sources

Definitions
CC-CEDICT
Frequency data
BCC Corpus (BLCU)