て手teがかりgakariてが手掛tegaかりkariてがか手掛tegakaりri
1.
A support or point of contact used to assist in climbing or gaining stability while navigating a physical space.
2.
An initial piece of information or indication that aids in the progression of an investigation or inquiry, helping to uncover further details or reach a conclusion.
3.
A subtle indication or lead that guides one toward discovering additional information or solutions in a complex situation.
Example:
その殺人者の正体は手掛かりがまったくなかった。