entries → 開頭兒
TSUMUGU · TOCFL 5 (est.) · 詞
開頭兒 word · TOCFL 5 (est.)
開頭兒 ＝ 開 ＋ 頭 ＋ 兒
· kāitóur
noun — the beginning, the start (colloquial, erhua form)

字源 FORM — what the parts do

開to open (打開)kāi
頭head, start (起頭)tóu
兒the erhua suffix (花兒)rspoken-Mandarin ending, no separate sense
開頭兒，打開的開，起頭的頭，加上兒化。
關 · Related
開頭kāitóuthe written form of the same word, without erhua