In″let (?), n. 1. A passage by which an inclosed place may be entered; a place of ingress; entrance.
Doors and windows, inlets of men and of light. Sir H. Wotton.
2. A bay or recess, as in the shore of a sea, lake, or large river; a narrow strip of water running into the land or between islands.
3. That which is let in or inlaid; an inserted material.
☞ Inlet is also used adjectively, as in inlet pipe, inlet valve, etc.