lapboard

As a noun lapboard

is a board held on the lap as a simple lap desk.

As an adjective false is

(label) one of two states of a boolean variable; logic.

As a noun lapboard

is a board held on the lap as a simple lap desk.

As an adjective undefined is

lacking a definition or value.

As a noun lapboard

is a board held on the lap as a simple lap desk.

As a letter t is

the twentieth letter of the.

As a symbol t is

symbol for tesla, the si unit of magnetic flux density.

As nouns the difference between clapboard and lapboard

is that clapboard is a narrow board, usually thicker at one edge than the other, used as siding for houses and similar structures of frame construction while lapboard is a board held on the lap as a simple lap desk.

As a verb clapboard

is to cover with clapboards.

As nouns the difference between larboard and lapboard

is that larboard is (obsolete|nautical) the left side of a ship, looking from the stern; port side while lapboard is a board held on the lap as a simple lap desk.

As nouns the difference between lampboard and lapboard

is that lampboard is a board housing a number of lamps that may be lit by an electrical circuit while lapboard is a board held on the lap as a simple lap desk.