Suheir (سهير) is the Arabic word for "small star" or "the wakeful one" — the star visible just before dawn.
Suheir Hammad (born 1973) is the Palestinian-American poet.
Suheir does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Suheir reduce to 8, The Visionary. This is a traditional interpretive system, not a factual claim about the name.