Number + 支 + 矛
矛 (máo) is a noun meaning "spear" or "lance," referring to a long pole weapon with a pointed tip. It is well known from the classical Chinese idiom 自相矛盾 (to contradict oneself), which literally describes a person selling both a spear and a shield with impossible claims.
这把矛有两米多长。
Zhè bǎ máo yǒu liǎng mǐ duō cháng.
This spear is more than two meters long.
矛是古代最常见的武器之一。
Máo shì gǔdài zuì chángjiàn de wǔqì zhī yī.
The spear was one of the most common weapons in ancient times.
成语"自相矛盾"里的矛就是长矛的意思。
Chéngyǔ "zìxiāng máodùn" lǐ de máo jiù shì cháng máo de yìsi.
The "máo" in the idiom "zìxiāng máodùn" refers to a long spear.