I am torn between my old sheath knife a Bowie style knife which i have had since i was 12 and sitll ues to this day. And my farthring laws Sgian Dudh that he gave to me, His last form of defence as the theories surrounding the Sgian Dubh go, I am very attached to both of them.
"QUOTED From Wikipedia"
(The name comes from the Gaelic sgian dubh meaning "black knife", where "black" may refer to the usual color of the handle of the knife. It is also suggested that "black" means secret, or hidden, as in the word blackmail. This is based on the stories and theories surrounding the knife's origin and the meaning of "Dubh" in Gaelic, in particular those associated with the Highland custom of depositing weapons at the entrance to a house prior to entering as a guest. Despite this practice, a small twin edged-dagger, ('Mattucashlass'), concealed under the armpit, combined with a smaller knife, ('Sgian dubh'), concealed in the hose or boot, would offer an element of defence or of surprise if employed in attack. An alternative theory is that the name is derived from the use of bog oak as a handle for the knife, with bog oak traditionally being a black colour.)