1) Nautical terminology 
The timber immediately above the keel of a wooden ship.
The timber immediately above the keel of a wooden ship.
The kelson or keelson is the member which, particularly in a wooden vessel, lies parallel with its keel but above the transverse members such as timbers, frames or in a larger vessel, floors. It is fastened to the keel partly to impart additional longitudinal stiffness to it but principally to bind the longitudinal members (keel and hog) to the tr...
• (n.) See Keelson.
Kel'son noun See Keelson . Sir W. Raleigh. 
The timber immediately above the keel of a wooden ship.
Kelson is a name for boys. The name Kelson is most commonly given to American boys.