【医】 gingival crevice
gum【医】 gingiva; gingivae; gingivo-; gum; oula; ula; ule-; ulo-
seam; sew; slot; stitch【化】 opening【医】 crevice; nesis; raphe; rhaphe; seam; sutura; suturae; suturation suture; suture joints; suturing