From Wiktionary, the free dictionary
chwarren (“gland”) + lymff (“lymph”).
chwarren lymff f (not mutable, plural chwarennau lymff)
- lymph node, lymph gland, lymphatic node[1]
- ^ Delyth Prys; J.P.M. Jones; Owain Davies; Gruffudd Prys (2006), Y Termiadur: termau wedi'u safoni; standardised terminology[1] (in Welsh), Cardiff: Awdurdod cymwysterau, cwricwlwm ac asesu Cymru (Qualifications curriculum & assessment authority for Wales), →ISBN, page 131