Weep
Weep turns up in 2 fields: tribology, waterproofing. Here is what it means to the people in each one.
Weep in tribology
To leak very slowly, leaving a damp oil film around a seal or joint rather than actual drips.
Shop verb for a seal, gasket or fitting that leaks just enough to keep the surface wet and collect dust, without forming drips. Many lip seals weep slightly by design, since a thin oil film under the lip keeps it cool and alive. A weep gets logged and watched; once it starts dripping or the level needs regular topping off, it becomes a leak job.
"Input seal on gearbox 4 is weeping, wipe it down and note it, it's not dripping yet."
Weep in waterproofing
An opening at the base of a wall or window system that lets collected water drain out.
In masonry, weeps are open head joints, tubes or vent inserts spaced along the course just above the through-wall flashing, commonly 16 to 24 inches apart. Windows and curtain wall have weep holes or slots in their sill frames. Weeps must stay open: sealing over them during restoration or blocking them with mortar droppings traps water inside the wall.
"Painters sealed every weep in the storefront sill, now the frames are full of water. Cut them open."