CLASP (British Rail)
WordNet
noun
(1) The act of grasping
"He released his clasp on my arm"
"He has a strong grip for an old man"
"She kept a firm hold on the railing"
(2) A fastener (as a buckle or hook) that is used to hold two things together
verb
(3) Hold firmly and tightly
(4) Grasp firmly
"The child clasped my hands"
(5) Fasten with a buckle or buckles
(6) Fasten with or as if with a brooch