抿 = 扌(hand) + 民 (people, phonetic mín). Picture a small, polite hand action: a delicate sip, a barely-parted smile, a quick smoothing of hair. Always something gentle and minimal — not a gulp, not a grin, not a brushing.
usage
抿一口 (mǐn yì kǒu) is the classic collocation for tasting wine, tea, or coffee. 抿嘴 means to press lips together — often translated as 'pursed lips' to convey shyness, restraint, or a small smile.